feat: add app and database modules

app/Observers/UserObserver.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace App\Observers;
+
+use App\Models\User;
+use Illuminate\Support\Facades\Auth;
+
+class UserObserver
+{
+    public function creating(User $user)
+    {
+        // $user->created_by = Auth::id();
+    }
+
+    public function updating(User $user)
+    {
+        // $user->updated_by = Auth::id();
+    }
+
+    public function deleting(User $user)
+    {
+        // $user->updated_by = Auth::id();
+    }
+}