Update to more generic db models

Also integrated entities into codebase

src/auth.rs

@@ -0,0 +1,19 @@
+use crate::user;
+use axum_login::{AuthUser, AuthnBackend, UserId};
+use serde::{Deserialize, Serialize};
+
+// References
+// https://github.com/maxcountryman/axum-login/tree/main/examples/sqlite/src
+// https://framesurge.sh/perseus/en-US/docs/0.4.x/state/intro
+
+impl AuthUser for user::Model {
+    type Id = i32;
+
+    fn id(&self) -> Self::Id {
+        self.id
+    }
+
+    fn session_auth_hash(&self) -> &[u8] {
+        self.password.as_bytes()
+    }
+}