feat: add freescout app with new event trigger (#2287)

* added FreeScout plugin

* docs: add freescout in sidebar

* docs(freescout): add missing app icon

* refactor(freescout): rename filter as eventType

---------

Co-authored-by: Ali BARIN <ali.barin53@gmail.com>

packages/backend/src/apps/freescout/index.js

@@ -0,0 +1,18 @@
+import defineApp from '../../helpers/define-app.js';
+import addAuthHeader from './common/add-auth-header.js';
+import auth from './auth/index.js';
+import triggers from './triggers/index.js';
+import setBaseUrl from './common/set-base-url.js';
+
+export default defineApp({
+  name: 'FreeScout',
+  key: 'freescout',
+  iconUrl: '{BASE_URL}/apps/freescout/assets/favicon.svg',
+  supportsConnections: true,
+  baseUrl: 'https://freescout.net',
+  primaryColor: '#F5D05E',
+  authDocUrl: '{DOCS_URL}/apps/freescout/connection',
+  beforeRequest: [setBaseUrl, addAuthHeader],
+  auth,
+  triggers,
+});