feat(AI): add ai manager admin and create powerpoint with ai

app/Policies/AiProviderPolicy.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace App\Policies;
+
+use App\Models\AiProvider;
+use App\Models\User;
+
+class AiProviderPolicy
+{
+    public function viewAny(User $user): bool
+    {
+        return $this->canManage($user);
+    }
+
+    public function view(User $user, AiProvider $aiProvider): bool
+    {
+        return $this->canManage($user);
+    }
+
+    public function create(User $user): bool
+    {
+        return $this->canManage($user);
+    }
+
+    public function update(User $user, AiProvider $aiProvider): bool
+    {
+        return $this->canManage($user);
+    }
+
+    public function delete(User $user, AiProvider $aiProvider): bool
+    {
+        return $this->canManage($user);
+    }
+
+    private function canManage(User $user): bool
+    {
+        return $user->hasRole('admin') || $user->hasPermission('ai.manage');
+    }
+}