feat(backend) backed init

backend/src/model/mod.rs

@@ -0,0 +1,12 @@
+use chrono::NaiveDateTime;
+use serde::{Deserialize, Serialize};
+use sqlx::FromRow;
+use uuid::Uuid;
+
+#[derive(Debug, Serialize, Deserialize, FromRow)]
+pub struct Post {
+    post_id: Uuid,
+    title: String,
+    content: String,
+    last_update: NaiveDateTime,
+}