feat: Scaffold the nixos modules

The modules themselves don't work yet, but the flake does ! Yay !
(that was way too complicated wtf)

modules/wings.nix

@@ -0,0 +1,65 @@
+{ flake }:
+{ lib, config, pkgs, ... }:
+
+with lib;
+let
+  cfg = config.services.wings;
+
+  flakePkgs = flake.outputs.packages.${pkgs.system};
+
+  wings = cfg.pkg;
+in {
+  options.services.wings = {
+    enable = lib.mkOption {
+      type = lib.types.bool;
+      default = false;
+    };
+
+    configuration = lib.mkOption {
+      type = lib.types.attrs;
+      default = {};
+    };
+
+    version = lib.mkOption {
+      type = lib.types.str;
+      default = "latest";
+    };
+
+    pkg = lib.lib.mkOption {
+      type = lib.types.package;
+      description = "The package to use for the pterodactyl wings daemon";
+      default = flakePkgs.wings;
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    virtualisation.docker.enable = true;
+
+    systemd.services.wings = {
+      enable = cfg.enable;
+      description = "Pterodactyl Wings daemon";
+
+      after = [ "docker.service" ];
+      partOf = [ "docker.service" ];
+      requires = [ "docker.service" ];
+
+      startLimitIntervalSec = 180;
+      startLimitBurst = 30;
+
+      serviceConfig = {
+        User = "root";
+        # WorkingDirectory = "/run/wings";
+
+        LimitNOFILE = 4096;
+        PIDFile = "/var/run/wings/daemon.pid";
+
+        ExecStart = "${cfg.pkg}/bin/wings --config ${pkgs.writeText "config.yaml" (lib.strings.toJSON cfg.configuration)}";
+
+        Restart = "on-failure";
+        RestartSec = "5s";
+      };
+
+      wantedBy = [ "multi-user.target" ];
+    };
+  };
+}