add: connect to socket by community

direct messages/groups connect by channel id, everything else should connect by channel with the "is_channel" header set to true

crates/core/src/database/questions.rs

@@ -49,7 +49,7 @@ impl DataManager {
     pub async fn fill_questions(
         &self,
         questions: Vec<Question>,
-        ignore_users: &Vec<usize>,
+        ignore_users: &[usize],
     ) -> Result<Vec<(Question, User)>> {
         let mut out: Vec<(Question, User)> = Vec::new();