feat: replace transmission with qbittorrent

modules/nixos/features/qbittorrent.nix

@@ -0,0 +1,37 @@
+{ config, lib, ... }:
+let
+  feature = "qbittorrent";
+  port = "5005";
+in
+{
+  config = lib.mkIf config.${feature}.enable {
+    users.users.qbittorrent.extraGroups = [ "media" ];
+
+    services = {
+      # service
+      qbittorrent = {
+        enable = true;
+        webuiPort = lib.toInt port;
+        profileDir = "/srv";
+        group = "media";
+        extraArgs = [
+          "--confirm-legal-notice"
+        ];
+      };
+
+      # reverse proxy
+      nginx = {
+        virtualHosts."${feature}.fi33.buzz" = {
+          forceSSL = true;
+          useACMEHost = "fi33.buzz";
+          locations."/" = {
+            proxyPass = "http://localhost:${port}";
+            # proxyWebsockets = true;
+          };
+        };
+      };
+    };
+  };
+
+  options.${feature}.enable = lib.mkEnableOption "enables ${feature}";
+}