feat(aarch64-darwin): add home-manager configuration

- Introduced `default.nix` with user-specific configurations for `home-manager`.
- Enabled various CLI tools including Bash, Fish, Git, and Starship.
- Added Alacritty terminal configuration with custom font, theme, and behavior.

homes/aarch64-darwin/harald@rialo/default.nix

@@ -0,0 +1,80 @@
+{ pkgs
+, config
+, ...
+}:
+{
+  home = {
+    username = "harald";
+    homeDirectory = "/Users/${config.home.username}";
+    stateVersion = "23.11"; # Please read the comment before changing.
+  };
+
+  metacfg = {
+    cli-apps = {
+      bash.enable = true;
+      fish.enable = true;
+      neovim.enable = false;
+      bat.enable = true;
+      starship.enable = true;
+      home-manager.enable = true;
+    };
+
+    tools = {
+      #direnv.enable = true;
+      #     ssh.enable = true;
+      git.enable = true;
+    };
+  };
+
+  xdg.configFile."alacritty/alacritty.toml".source =
+    (pkgs.formats.toml { }).generate "alacritty-config"
+      {
+        font = {
+          normal.family = "JetBrainsMono Nerd Font";
+          size = 17;
+        };
+
+        selection.save_to_clipboard = true;
+        mouse.bindings = [
+          { mouse = "Middle"; action = "Paste"; }
+        ];
+
+        # Color theme ported from iTerm 2 Smoooooth
+        colors.primary = {
+          foreground = "#dbdbdb";
+          background = "#14191e";
+        };
+
+        colors.cursor = {
+          text = "#000000";
+          cursor = "#fefffe";
+        };
+
+        colors.selection = {
+          text = "#000000";
+          background = "#b3d7ff";
+        };
+
+        colors.normal = {
+          black = "#14191e";
+          red = "#b43c29";
+          green = "#00c200";
+          yellow = "#c7c400";
+          blue = "#2743c7";
+          magenta = "#bf3fbd";
+          cyan = "#00c5c7";
+          white = "#c7c7c7";
+        };
+
+        colors.bright = {
+          black = "#676767";
+          red = "#dc7974";
+          green = "#57e690";
+          yellow = "#ece100";
+          blue = "#a6aaf1";
+          magenta = "#e07de0";
+          cyan = "#5ffdff";
+          white = "#feffff";
+        };
+      };
+}