✨ Add topic to the UI store Room

src/domain/model/store_interface.rs

@@ -28,6 +28,7 @@ pub trait RoomStoreConsumerInterface {
     fn id(&self) -> &RoomId;
     fn is_direct(&self) -> Option<bool>;
     fn name(&self) -> Option<String>;
+    fn topic(&self) -> Option<String>;
 
     #[allow(dead_code)]
     async fn avatar(&self) -> Option<Avatar>;
@@ -38,6 +39,7 @@ pub trait RoomStoreConsumerInterface {
 pub trait RoomStoreProviderInterface {
     fn on_new_name(&self, name: Option<String>);
     fn on_new_avatar(&self, avatar: Option<Avatar>);
+    fn on_new_topic(&self, topic: Option<String>);
     fn on_new_member(&self, member: RoomMember);
     fn on_invitation(&self, invitation: Invitation);
 }