refactor: Split remote and deactivated users into their own columns

src/service/users/remote.rs

@@ -0,0 +1,17 @@
+use conduwuit::utils::stream::TryIgnore;
+use futures::Stream;
+use ruma::{OwnedUserId, UserId};
+
+impl super::Service {
+	/// Record the existence of a remote user.
+	pub fn record_remote_user(&self, user_id: &UserId) {
+		assert!(self.services.globals.user_is_local(user_id), "user is not remote");
+
+		self.db.remoteuserid_remoteuser.insert(user_id, "");
+	}
+
+	/// Returns a stream over all remote users this server has ever seen.
+	pub fn stream_remote_users(&self) -> impl Stream<Item = OwnedUserId> + Send {
+		self.db.remoteuserid_remoteuser.keys().ignore_err()
+	}
+}