feat(removebg): add remove-bg integration (#1406)

* feat(remove-bg): add remove-bg integration

* feat(removebg): update name and icon

* docs(removebg): update name and icon

* docs: add remove.bg in available apps

* docs(removebg): correct path

---------

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

packages/backend/src/apps/removebg/auth/is-still-verified.ts

@@ -0,0 +1,9 @@
+import { IGlobalVariable } from '@automatisch/types';
+import verifyCredentials from './verify-credentials';
+
+const isStillVerified = async ($: IGlobalVariable) => {
+  await verifyCredentials($);
+  return true;
+};
+
+export default isStillVerified;