Update to Zig 0.16.0 (#962)

Signed-off-by: AnErrupTion <anerruption@disroot.org>

## What are the changes about?

Ports the code base to Zig 0.16.0.

## What existing issue does this resolve?

N/A

## Pre-requisites

- [x] I have tested & confirmed the changes work locally
- [x] I have run `zig fmt` throughout my changes

Reviewed-on: https://codeberg.org/fairyglade/ly/pulls/962

build.zig.zon

@@ -2,15 +2,19 @@
     .name = .ly,
     .version = "1.4.0",
     .fingerprint = 0xa148ffcc5dc2cb59,
-    .minimum_zig_version = "0.15.0",
+    .minimum_zig_version = "0.16.0",
     .dependencies = .{
         .ly_ui = .{
             .path = "ly-ui",
         },
         .clap = .{
-            .url = "git+https://github.com/Hejsil/zig-clap#5289e0753cd274d65344bef1c114284c633536ea",
-            .hash = "clap-0.11.0-oBajB-HnAQDPCKYzwF7rO3qDFwRcD39Q0DALlTSz5H7e",
+            .url = "git+https://github.com/Hejsil/zig-clap#fc1e5cc3f6d9d3001112385ee6256d694e959d2f",
+            .hash = "clap-0.11.0-oBajB7foAQC3Iyn4IVCkUdYaOVVng5IZkSncySTjNig1",
         },
     },
-    .paths = .{""},
+    .paths = .{
+        "build.zig",
+        "build.zig.zon",
+        "src",
+    },
 }