Zapier integration (#491)

* create zapier app

* install sanctum

* move OAuthProviderController

* make `api-external` middleware

* add zapier endpoints

* add tests

* token management

* zapier event handler

* add policy

* use `slug` instead of `id`

* wip

* check policies

* change api prefix to `external`

* ui tweaks

* validate token abilities

* open zapier URL

* zapier ui tweaks

* update zap

* Fix linting

* Added sample endpoints + minor UI changes

* Run PHP code linter

---------

Co-authored-by: Julien Nahum <julien@nahum.net>

app/Integrations/Handlers/ZapierIntegration.php

@@ -0,0 +1,42 @@
+<?php
+
+namespace App\Integrations\Handlers;
+
+use App\Events\Forms\FormSubmitted;
+use App\Models\Integration\FormIntegration;
+use Exception;
+
+class ZapierIntegration extends AbstractIntegrationHandler
+{
+    public function __construct(
+        protected FormSubmitted $event,
+        protected FormIntegration $formIntegration,
+        protected array $integration
+    ) {
+        parent::__construct($event, $formIntegration, $integration);
+    }
+
+    public static function getValidationRules(): array
+    {
+        return [];
+    }
+
+    public static function isOAuthRequired(): bool
+    {
+        return false;
+    }
+
+    protected function getWebhookUrl(): string
+    {
+        if (!isset($this->integrationData->hook_url)) {
+            throw new Exception('The webhook URL is missing');
+        }
+
+        return $this->integrationData->hook_url;
+    }
+
+    protected function shouldRun(): bool
+    {
+        return parent::shouldRun() && $this->getWebhookUrl();
+    }
+}