Make notification db representation more flexible

crates/collab/src/db/tables/notification_kind.rs

@@ -1,10 +1,11 @@
+use crate::db::NotificationKindId;
 use sea_orm::entity::prelude::*;
 
 #[derive(Clone, Debug, PartialEq, Eq, DeriveEntityModel)]
 #[sea_orm(table_name = "notification_kinds")]
 pub struct Model {
     #[sea_orm(primary_key)]
-    pub id: i32,
+    pub id: NotificationKindId,
     pub name: String,
 }