Allow using up to a UTF-32 codepoint as a password asterisk (closes #715)

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

res/config.ini

@@ -28,6 +28,8 @@ animation = none
 animation_timeout_sec = 0
 
 # The character used to mask the password
+# You can either type it directly as a UTF-8 character (like *), or use a UTF-32
+# codepoint (for example 0x2022 for a bullet point)
 # If null, the password will be hidden
 # Note: you can use a # by escaping it like so: \#
 asterisk = *

src/config/Config.zig

@@ -8,7 +8,7 @@ const Bigclock = enums.Bigclock;
 
 animation: Animation = .none,
 animation_timeout_sec: u12 = 0,
-asterisk: ?u8 = '*',
+asterisk: ?u32 = '*',
 auth_fails: u64 = 10,
 bg: u32 = 0x00000000,
 bigclock: Bigclock = .none,

src/tui/TerminalBuffer.zig

@@ -202,7 +202,7 @@ pub fn drawConfinedLabel(self: TerminalBuffer, text: []const u8, x: usize, y: us
     }
 }
 
-pub fn drawCharMultiple(self: TerminalBuffer, char: u8, x: usize, y: usize, length: usize) void {
+pub fn drawCharMultiple(self: TerminalBuffer, char: u32, x: usize, y: usize, length: usize) void {
     const cell = utils.initCell(char, self.fg, self.bg);
     for (0..length) |xx| utils.putCell(x + xx, y, cell);
 }

src/tui/components/Text.zig

@@ -19,9 +19,9 @@ visible_length: usize,
 x: usize,
 y: usize,
 masked: bool,
-maybe_mask: ?u8,
+maybe_mask: ?u32,
 
-pub fn init(allocator: Allocator, buffer: *TerminalBuffer, masked: bool, maybe_mask: ?u8) Text {
+pub fn init(allocator: Allocator, buffer: *TerminalBuffer, masked: bool, maybe_mask: ?u32) Text {
     const text = DynamicString.init(allocator);
 
     return .{