feat: add more service options and change Gitea to Forgejo

sp-modules/jitsi-meet/module.nix

@@ -13,6 +13,10 @@ in
       default = "meet";
       type = lib.types.strMatching "[A-Za-z0-9][A-Za-z0-9\-]{0,61}[A-Za-z0-9]";
     };
+    appName = lib.mkOption {
+      default = "Jitsi Meet";
+      type = lib.types.str;
+    };
   };
 
   config = lib.mkIf cfg.enable {
@@ -23,6 +27,12 @@ in
       interfaceConfig = {
         SHOW_JITSI_WATERMARK = false;
         SHOW_WATERMARK_FOR_GUESTS = false;
+        APP_NAME = cfg.appName;
+      };
+      config = {
+        prejoinConfig = {
+          enabled = true;
+        };
       };
     };
     services.nginx.virtualHosts."${cfg.subdomain}.${domain}" = {