Add dingserver flake

flake.nix

@@ -68,6 +68,7 @@
 		nixosConfigurations = {
 			dingbox = hostSystem { hostname = "dingbox"; };
 			miniding = hostSystem { hostname = "miniding"; };
+			dingserver = hostSystem { hostname = "dingserver"; };
 		};
 	};
 }