add: group channels, group channel members list, group channel renaming

crates/core/src/model/channels.rs

@@ -4,7 +4,7 @@ use tetratto_shared::{snow::Snowflake, unix_epoch_timestamp};
 use super::communities_permissions::CommunityPermission;
 
 /// A channel is a more "chat-like" feed in communities.
-#[derive(Serialize, Deserialize)]
+#[derive(Clone, Serialize, Deserialize)]
 pub struct Channel {
     pub id: usize,
     pub community: usize,