chore: update personal git, delta and editor config

Move git config to the settings option, switch to the standalone programs.delta module with git integration, add commitizen, and treat Jenkinsfiles as groovy.

emmathorpe/home.nix

@@ -54,7 +54,8 @@
     size = 24;
 	};
 	home.packages = [
-		pkgs.element-desktop
+    pkgs.element-desktop
+    pkgs.commitizen
 	];
 	home.sessionVariables = {
 		MOZ_USE_XINPUT2 = "1";
@@ -79,19 +80,24 @@
       colorscheme peaksea
       set termguicolors
       set background=dark
+      au BufNewFile,BufRead *Jenkinsfile setf groovy
       '';
   };
   programs.git = {
     enable = true;
     package = pkgs.gitFull;
-    userName = "Emma Thorpe";
-    extraConfig = {
+    settings = {
+      user.name = "Emma Thorpe";
       push = {
         autoSetupRemote = true;
       };
+      init = {
+        defaultBranch = "main";
+      };
     };
-    delta = {
-      enable = true;
-    };
-  };  
+  };
+  programs.delta = {
+    enable = true;
+    enableGitIntegration = true;
+  };
 }