Refactor blog module and remove blog-related functionality

- Removed blog router and associated API endpoints.
- Deleted blog persistence functions and related query parameters.
- Removed blog schemas and models from the codebase.
- Introduced common crate for shared types, including DateTimeWithTimeZoneWrapper.
- Added Thought and Follow models with corresponding migrations.
- Updated dependencies in Cargo.toml files to reflect changes.
- Adjusted tests to remove references to the blog module.

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

@@ -0,0 +1,32 @@
+use sea_orm::entity::prelude::*;
+
+#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Eq)]
+#[sea_orm(table_name = "follow")]
+pub struct Model {
+    #[sea_orm(primary_key)]
+    pub follower_id: i32,
+    #[sea_orm(primary_key)]
+    pub followed_id: i32,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
+pub enum Relation {
+    #[sea_orm(
+        belongs_to = "super::user::Entity",
+        from = "Column::FollowerId",
+        to = "super::user::Column::Id",
+        on_update = "NoAction",
+        on_delete = "Cascade"
+    )]
+    Follower,
+    #[sea_orm(
+        belongs_to = "super::user::Entity",
+        from = "Column::FollowedId",
+        to = "super::user::Column::Id",
+        on_update = "NoAction",
+        on_delete = "Cascade"
+    )]
+    Followed,
+}
+
+impl ActiveModelBehavior for ActiveModel {}

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

@@ -2,5 +2,6 @@
 
 pub mod prelude;
 
-pub mod blog;
+pub mod follow;
+pub mod thought;
 pub mod user;

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

@@ -1,4 +1,5 @@
 //! `SeaORM` Entity, @generated by sea-orm-codegen 1.0.0
 
-pub use super::blog::Entity as Blog;
+pub use super::follow::Entity as Follow;
+pub use super::thought::Entity as Thought;
 pub use super::user::Entity as User;

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

@@ -1,15 +1,13 @@
-//! `SeaORM` Entity, @generated by sea-orm-codegen 1.0.0
-
 use sea_orm::entity::prelude::*;
 
 #[derive(Clone, Debug, PartialEq, DeriveEntityModel, Eq)]
-#[sea_orm(table_name = "blog")]
+#[sea_orm(table_name = "thought")]
 pub struct Model {
     #[sea_orm(primary_key)]
     pub id: i32,
     pub author_id: i32,
-    pub title: String,
     pub content: String,
+    pub created_at: DateTimeWithTimeZone,
 }
 
 #[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]

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

@@ -12,15 +12,6 @@ pub struct Model {
 }
 
 #[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
-pub enum Relation {
-    #[sea_orm(has_many = "super::blog::Entity")]
-    Blog,
-}
-
-impl Related<super::blog::Entity> for Entity {
-    fn to() -> RelationDef {
-        Relation::Blog.def()
-    }
-}
+pub enum Relation {}
 
 impl ActiveModelBehavior for ActiveModel {}