Move Nix files back to the root of the project

modules/nixos/homelab/forgejo.nix

@@ -0,0 +1,34 @@
+{ config, lib, ... }:
+
+with lib;
+
+{
+  options.nixosModules.forgejo.enable = mkEnableOption "Enable forgejo";
+
+  config = mkIf config.nixosModules.forgejo.enable {
+    services = {
+      forgejo = {
+        enable = true;
+        group = "media";
+        stateDir = "/mnt/media/forgejo";
+
+        settings = {
+          server = {
+            DOMAIN = "forgejo.oliverdavies.uk";
+            HTTP_PORT = 2223;
+          };
+
+          service = {
+            DISABLE_REGISTRATION = true;
+          };
+        };
+      };
+
+      caddy.virtualHosts."${config.services.forgejo.settings.server.DOMAIN}" = {
+        useACMEHost = "oliverdavies.uk";
+
+        extraConfig = "reverse_proxy localhost:${toString config.services.forgejo.settings.server.HTTP_PORT}";
+      };
+    };
+  };
+}