add minecraft server test

nixos/hosts/shadowfax/default.nix

@@ -145,6 +145,35 @@ in {
   };
 
   services = {
+    # Minecraft
+    minecraft-servers = {
+      enable = true;
+      eula = true;
+      openFirewall = true;
+      servers.fabric = {
+        enable = true;
+
+        # Specify the custom minecraft server package
+        package = pkgs.fabricServers.fabric-1_21_1.override {
+          loaderVersion = "0.16.10";
+        }; # Specific fabric loader version
+
+        symlinks = {
+          mods = pkgs.linkFarmFromDrvs "mods" (
+            builtins.attrValues {
+              Fabric-API = pkgs.fetchurl {
+                url = "https://cdn.modrinth.com/data/P7dR8mSH/versions/9YVrKY0Z/fabric-api-0.115.0%2B1.21.1.jar";
+                sha512 = "e5f3c3431b96b281300dd118ee523379ff6a774c0e864eab8d159af32e5425c915f8664b1cd576f20275e8baf995e016c5971fea7478c8cb0433a83663f2aea8";
+              };
+              Backpacks = pkgs.fetchurl {
+                url = "https://cdn.modrinth.com/data/MGcd6kTf/versions/Ci0F49X1/1.2.1-backpacks_mod-1.21.2-1.21.3.jar";
+                sha512 = "6efcff5ded172d469ddf2bb16441b6c8de5337cc623b6cb579e975cf187af0b79291b91a37399a6e67da0758c0e0e2147281e7a19510f8f21fa6a9c14193a88b";
+              };
+            }
+          );
+        };
+      };
+    };
     # Minio
     minio = {
       enable = true;