feat: add geary module

modules/home/applications/geary.nix

@@ -0,0 +1,33 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+let
+  inherit (lib) mkEnableOption mkIf;
+  cfg = config.ataraxia.programs.geary;
+in
+{
+  options.ataraxia.programs.geary = {
+    enable = mkEnableOption "Enable geary program";
+  };
+
+  config = mkIf cfg.enable {
+    home.packages = with pkgs; [ geary ];
+
+    defaultApplications.mail = {
+      cmd = "${pkgs.geary}/bin/geary";
+      desktop = "geary";
+    };
+
+    startupApplications = [
+      config.defaultApplications.mail.cmd
+    ];
+
+    persist.state.directories = [
+      ".config/geary"
+      ".local/share/geary"
+    ];
+  };
+}