feat: enhance user registration and follow functionality, add popular tags endpoint, and update tests

thoughts-backend/models/src/domains/follow.rs

@@ -6,7 +6,7 @@ pub struct Model {
     #[sea_orm(primary_key, auto_increment = false)]
     pub follower_id: Uuid,
     #[sea_orm(primary_key, auto_increment = false)]
-    pub followed_id: Uuid,
+    pub following_id: Uuid,
 }
 
 #[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
@@ -21,12 +21,12 @@ pub enum Relation {
     Follower,
     #[sea_orm(
         belongs_to = "super::user::Entity",
-        from = "Column::FollowedId",
+        from = "Column::FollowingId",
         to = "super::user::Column::Id",
         on_update = "NoAction",
         on_delete = "Cascade"
     )]
-    Followed,
+    Following,
 }
 
 impl Related<super::user::Entity> for Entity {