Update shared configuration to include the server

nixos-configurations/shared.nix

@@ -31,7 +31,8 @@
   };
 
   home-manager.users.thiloho = { ... }: {
-    programs.git = {
+    programs = {
+      git = {
         enable = true;
         userName = "thiloho";
         userEmail = "123883702+thiloho@users.noreply.github.com";
@@ -39,5 +40,11 @@
           # signByDefault = true;
         # };
       };
+      helix = {
+        enable = true;
+        defaultEditor = true;
+        settings.theme = "ayu_dark";
+      };
+    };
   };
 }