Feature: Add custom command & label support (#945)

## What are the changes about?

Adds customizable commands and labels to ly.
Solves https://codeberg.org/fairyglade/ly/issues/905.

Since Ly doesn't use INI headers. I use them exclusively for declarations of custom commands and labels.

### Commands

Bind a keybind to a command, and add a hint to the HUD. Useful for use cases like display brightness, switching between GPUs, etc.

Supports localization in the `name` field only. ex: where `lang = es`: `$brightness_up` => `bajar brillo`

Declared in config.ini with the following:

```ini
[cmd:F8]
name = custom command 2
cmd = touch /tmp/ly.gaming
```

### Labels

Add a label to the HUD. As specified in #905.
The text of the label corresponds to the output of the command specified in `[lbl:NAME]`.
Only shows the first line of the output.

Declared in config.ini with the following:

```ini
[lbl:kernel]
cmd = uname -srn
refresh = 0
```

Example to add to the config.ini:
```ini
# Declare a command with the F8 binding.
[cmd:F8]
#The name of the command to show up in Ly.
name = custom command
cmd = touch /tmp/ly.gaming

# Declare a label with an ID. This ID should be unique across all labels.
[lbl:kernel]
cmd = uname -srn
# In frames, the time to re-run the command and update the label. If 0, only run once- do not refresh.
refresh = 0

# Once you're done setting up labels and commands, add an empty header
# below to continue configurating the rest of Ly.
# Put other settings not belonging to custom commands/labels below here.
[]

```

## Pre-requisites

- [x] I have tested & confirmed the changes work locally

![image](/attachments/f9373ac9-567e-4f47-987c-1df6f4ee0d84)

Reviewed-on: https://codeberg.org/fairyglade/ly/pulls/945
Reviewed-by: AnErrupTion <anerruption+codeberg@disroot.org>
Co-authored-by: RadsammyT <radsammyt@gmail.com>
Co-committed-by: RadsammyT <radsammyt@gmail.com>

res/config.ini

@@ -143,6 +143,11 @@ colormix_col2 = 0x000000FF
 # Color mixing animation third color id
 colormix_col3 = 0x20000000
 
+# For custom binds: the horizontal limit in characters for each
+# line of custom binds before moving on to the next.
+# If null, defaults to the width of the terminal instead.
+custom_bind_width = null
+
 # Custom sessions directory
 # You can specify multiple directories,
 # e.g. $CONFIG_DIRECTORY/ly/custom-sessions:$PREFIX_DIRECTORY/share/custom-sessions
@@ -380,3 +385,35 @@ xinitrc = ~/.xinitrc
 # You can specify multiple directories,
 # e.g. $PREFIX_DIRECTORY/share/xsessions:$PREFIX_DIRECTORY/local/share/xsessions
 xsessions = $PREFIX_DIRECTORY/share/xsessions
+
+# Custom Commands and Labels:
+# The following examples below give an outline for setting up custom commands and labels.
+# Unless specified as optional, an option is mandatory.
+
+# Comments preceding with '##' are for documentation.
+# Comments preceding with '#' comment out the example INI.
+
+##---
+## Declare a command with the F8 binding.
+#[cmd:F8]
+## The name of the command to show up in Ly.
+## Note: "$" in "$brightness_up" fetches the appropriate string from the specified locale file
+## and is replaced with the value representing "brightness_up".
+## You can see the list of keys in any locale file in $CONFIG_DIRECTORY/ly/lang.
+#name = custom command $brightness_up
+#cmd = touch /tmp/ly.gaming
+#
+## Declare a label with an ID. This ID should be unique across all labels.
+#[lbl:kernel]
+#cmd = uname -srn
+## Optional, defaulting to 0.
+## In frames, the time to re-run the command and update the label.
+## If 0, only run once and do not refresh afterwards
+#refresh = 0
+#
+## Once you're done setting up labels and commands, add an empty header
+## below to continue configurating the rest of Ly.
+## Put other settings not belonging to custom commands/labels below here.
+#[]
+#
+##---

res/lang/ar.ini

@@ -3,6 +3,9 @@ brightness_down = خفض السطوع
 brightness_up = رفع السطوع
 capslock = capslock
 
+
+
+
 err_alloc = فشل في تخصيص الذاكرة
 
 

res/lang/bg.ini

@@ -3,6 +3,9 @@ brightness_down = намаляване на яркостта
 brightness_up = увеличаване на яркостта
 capslock = caps lock
 custom = персонализирано
+
+
+
 err_alloc = неуспешно заделяне на памет
 err_args = неуспешен анализ на аргументите от командния ред
 err_autologin_session = сесията за автоматично влизане не е намерена

res/lang/cat.ini

@@ -3,6 +3,9 @@ brightness_down = abaixar brillantor
 brightness_up = apujar brillantor
 capslock = Bloq Majús
 
+
+
+
 err_alloc = assignació de memòria fallida
 
 

res/lang/cs.ini

@@ -3,6 +3,9 @@
 
 capslock = capslock
 
+
+
+
 err_alloc = alokace paměti selhala
 
 

res/lang/de.ini

@@ -3,6 +3,9 @@ brightness_down = Helligkeit-
 brightness_up = Helligkeit+
 capslock = Feststelltaste
 
+
+
+
 err_alloc = Speicherzuweisung fehlgeschlagen
 
 

res/lang/en.ini

@@ -3,6 +3,9 @@ brightness_down = decrease brightness
 brightness_up = increase brightness
 capslock = capslock
 custom = custom
+custom_info_err_output_long = output too long
+custom_info_err_no_output = no output
+custom_info_err_no_output_error = , possible error
 err_alloc = failed memory allocation
 err_args = unable to parse command line arguments
 err_autologin_session = autologin session not found

res/lang/eo.ini

@@ -3,6 +3,9 @@ brightness_down = malpliigi helecon
 brightness_up = pliigi helecon
 capslock = majuskla baskulo
 custom = propra
+
+
+
 err_alloc = malsukcesis memorasignon
 err_args = ne povas analizi argumentojn de komanda linio
 err_autologin_session = aŭtomatan ensalutan seancon ne trovis
@@ -73,6 +76,7 @@ restart = restartigi
 shell = ŝelo
 shutdown = malŝalti
 sleep = memordormi
+
 wayland = wayland
 x11 = x11
 xinitrc = xinitrc

res/lang/es.ini

@@ -3,6 +3,9 @@ brightness_down = bajar brillo
 brightness_up = subir brillo
 capslock = Bloq Mayús
 
+
+
+
 err_alloc = asignación de memoria fallida
 
 

res/lang/fr.ini

@@ -3,6 +3,9 @@ brightness_down = diminuer la luminosité
 brightness_up = augmenter la luminosité
 capslock = verr.maj
 custom = customisé
+
+
+
 err_alloc = échec d'allocation mémoire
 err_args = échec de l'analyse des arguments en lignes de commande
 err_autologin_session = session de connexion automatique introuvable

res/lang/it.ini

@@ -3,6 +3,9 @@
 
 capslock = capslock
 
+
+
+
 err_alloc = impossibile allocare memoria
 
 

res/lang/ja_JP.ini

@@ -3,6 +3,9 @@ brightness_down = 明るさを下げる
 brightness_up = 明るさを上げる
 capslock = CapsLock
 
+
+
+
 err_alloc = メモリ割り当て失敗
 
 

res/lang/ku.ini

@@ -3,6 +3,9 @@ brightness_down = ronahiyê kêm bike
 brightness_up = ronahiyê bilind bike
 capslock = tîpên girdek (capslock)
 custom = kesane
+
+
+
 err_alloc = veqetandina bîrê têk çû
 err_args = argumanên rêzika fermanê nehatin analîzkirin
 err_autologin_session = danişîna têketina xweber nehate dîtin

res/lang/lv.ini

@@ -3,6 +3,9 @@ brightness_down = samazināt spilgtumu
 brightness_up = palielināt spilgtumu
 capslock = caps lock
 custom = pielāgots
+
+
+
 err_alloc = neizdevās atmiņas piešķiršana
 
 

res/lang/pl.ini

@@ -3,6 +3,9 @@ brightness_down = zmniejsz jasność
 brightness_up = zwiększ jasność
 capslock = capslock
 custom = własny
+
+
+
 err_alloc = nieudana alokacja pamięci
 
 err_autologin_session = nie znaleziono sesji autologowania

res/lang/pt.ini

@@ -3,6 +3,9 @@
 
 capslock = capslock
 
+
+
+
 err_alloc = erro na atribuição de memória
 
 

res/lang/pt_BR.ini

@@ -3,6 +3,9 @@
 
 capslock = caixa alta
 
+
+
+
 err_alloc = alocação de memória malsucedida
 
 

res/lang/ro.ini

@@ -22,6 +22,9 @@ capslock = capslock
 
 
 
+
+
+
 
 
 

res/lang/ru.ini

@@ -3,6 +3,9 @@ brightness_down = уменьшить яркость
 brightness_up = увеличить яркость
 capslock = capslock
 custom = пользовательский
+
+
+
 err_alloc = не удалось выделить память
 
 err_autologin_session = не найдена сессия с автологином

res/lang/sr.ini

@@ -3,6 +3,9 @@
 
 capslock = capslock
 
+
+
+
 err_alloc = neuspijesna alokacija memorije
 
 

res/lang/sv.ini

@@ -3,6 +3,9 @@ brightness_down = minska ljusstyrka
 brightness_up = öka ljusstyrka
 capslock = capslock
 custom = anpassad
+
+
+
 err_alloc = minnesallokering misslyckades
 err_args = tolkning av kommandoargument misslyckades
 err_autologin_session = autologin-session hittades inte

res/lang/tr.ini

@@ -3,6 +3,9 @@ brightness_down = parlakligi azalt
 brightness_up = parlakligi arttir
 capslock = capslock
 
+
+
+
 err_alloc = basarisiz bellek ayirma
 
 

res/lang/uk.ini

@@ -3,6 +3,9 @@
 
 capslock = capslock
 
+
+
+
 err_alloc = невдале виділення пам'яті
 
 

res/lang/zh_CN.ini

@@ -3,6 +3,9 @@
 
 capslock = 大写锁定
 
+
+
+
 err_alloc = 内存分配失败