feat(nix): enable WezTerm support on Darwin systems

- Added a module to configure WezTerm with an enable option and system package inclusion.
- Enabled WezTerm for aarch64-darwin systems and updated base system packages.
- Improves terminal experience by integrating WezTerm into the Darwin configurations.

systems/aarch64-darwin/m4/default.nix

@@ -30,6 +30,7 @@ with lib.metacfg;
     tools = {
       direnv.enable = true;
       alacritty.enable = true;
+      wezterm.enable = true;
     };
     build.enable = true;
   };