🚀 add git identity option

modules/programs/git.nix

@@ -20,6 +20,16 @@ in
       type = types.bool;
       example = true;
     };
+    identity = {
+      name = mkOption {
+        default = "Moritz Böhme";
+        type = types.str;
+      };
+      email = mkOption {
+        default = "mail@moritzboeh.me";
+        type = types.str;
+      };
+    };
   };
 
   config = mkIf cfg.enable {
@@ -38,8 +48,8 @@ in
     home-manager.users.moritz = {
       programs.git = {
         enable = true;
-        userName = "Moritz Böhme";
-        userEmail = "mail@moritzboeh.me";
+        userName = cfg.identity.name;
+        userEmail = cfg.identity.email;
         extraConfig = {
           init.defaultBranch = "main";
           merge.conflictstyle = "diff3";