refactor: switch from modules to import arrays

modules/nixos/features/ntfy-sh.nix

@@ -1,38 +1,24 @@
-{
-  config,
-  lib,
-  ...
-}:
 let
-  feature = "ntfy-sh";
   port = "5002";
 in
 {
-  config = lib.mkIf config.${feature}.enable {
-    services = {
-      # service
-      ntfy-sh = {
-        enable = true;
-        settings = {
-          base-url = "https://ntfy-sh.fi33.buzz";
-          listen-http = ":${port}";
-          behind-proxy = true;
-        };
+  services = {
+    ntfy-sh = {
+      enable = true;
+      settings = {
+        base-url = "https://ntfy-sh.fi33.buzz";
+        listen-http = ":${port}";
+        behind-proxy = true;
       };
+    };
 
-      # reverse proxy
-      nginx = {
-        virtualHosts."${feature}.fi33.buzz" = {
-          forceSSL = true;
-          useACMEHost = "fi33.buzz";
-          locations."/" = {
-            proxyPass = "http://localhost:${port}";
-            proxyWebsockets = true;
-          };
-        };
+    nginx.virtualHosts."ntfy-sh.fi33.buzz" = {
+      forceSSL = true;
+      useACMEHost = "fi33.buzz";
+      locations."/" = {
+        proxyPass = "http://localhost:${port}";
+        proxyWebsockets = true;
       };
     };
   };
-
-  options.${feature}.enable = lib.mkEnableOption "enables ${feature}";
 }