feat(home-manager): enhance tmux configuration options

- Replaced `mkEnableOption` with a more detailed boolean `mkOption` for `tmux` configuration.
- Set a default value of `true` and added description for better clarity.
- Simplifies `tmux` package handling by removing unnecessary declaration.

modules/home/cli-apps/tmux/default.nix

@@ -11,11 +11,14 @@ let
 in
 {
   options.metacfg.cli-apps.tmux = {
-    enable = mkEnableOption "Tmux";
+    enable = mkOption {
+      type = types.bool;
+      default = true;
+      description = "Enable Tmux";
+    };
   };
 
   config = mkIf cfg.enable {
-    home.packages = with pkgs; [ tmux ];
     home.file.".tmux.conf".text = ''
       set -g mouse on
     '';