Refactor join, alias services

Split knock, user register from api into services

Fix autojoin not working with v12 rooms

Fix 'm.login.registration_token/validity' for reloaded registration tokens

Change join servers order

Move autojoin for ldap

src/service/rooms/alias/mod.rs

@@ -109,10 +109,10 @@ impl Service {
 	pub async fn maybe_resolve_with_servers(
 		&self,
 		room: &RoomOrAliasId,
-		servers: Option<Vec<OwnedServerName>>,
+		servers: Option<&[OwnedServerName]>,
 	) -> Result<(OwnedRoomId, Vec<OwnedServerName>)> {
 		match <&RoomId>::try_from(room) {
-			| Ok(room_id) => Ok((room_id.to_owned(), servers.unwrap_or_default())),
+			| Ok(room_id) => Ok((room_id.to_owned(), Vec::from(servers.unwrap_or_default()))),
 			| Err(alias) => self.resolve_alias(alias).await,
 		}
 	}