Add config flag to disallow parties joining the lobby

rc_core/src/persist/config/cubes_json.rs

@@ -319,6 +319,7 @@ impl <C: Clone + Send> super::ConfigProvider<C> for CubeConfig {
             auto_signup: self.settings.server.auto_signup,
             allow_signup: self.settings.server.allow_signup,
             queue_mode: super::QueueChangeMode::from_persist(self.settings.server.queue_mode.clone()),
+            allow_parties: self.settings.server.allow_parties,
             domain: self.settings.server.domain.to_owned(),
             cdn_url: self.settings.server.cdn_url.trim_end_matches('/').to_owned(),
             auth_url: self.settings.server.auth_url.trim_end_matches('/').to_owned(),

rc_core/src/persist/config/traits.rs

@@ -97,6 +97,7 @@ pub struct ServerConfig {
     pub auto_signup: bool,
     pub allow_signup: bool,
     pub queue_mode: QueueChangeMode,
+    pub allow_parties: bool,
     pub domain: String,
     pub cdn_url: String,
     pub auth_url: String,

rc_core/src/persist/settings.rs

@@ -99,6 +99,8 @@ pub struct ServerSettings {
     pub allow_signup: bool,
     #[serde(default)]
     pub queue_mode: QueueMode,
+    #[serde(default = "default_true")]
+    pub allow_parties: bool,
     #[serde(default = "default_domain_root")]
     pub domain: String,
     #[serde(default = "default_cdn_root_url")]
@@ -151,6 +153,7 @@ fn default_server_conf() -> ServerSettings {
         auto_signup: false,
         allow_signup: true,
         queue_mode: QueueMode::Notify,
+        allow_parties: true,
         domain: default_domain_root(),
         cdn_url: default_cdn_root_url(),
         auth_url: default_auth_root_url(),