43 add billing portal link (#4318)

* Add create billing portal session endpoint

* Rename checkout to checkoutSession

* Add billig portal query in twenty-front

* Add billing menu item

* WIP: add menu page

* Code review returns

* Rename request files

* Unwip: add menu page

* Add billing cover image

* Fix icon imports

* Rename parameter

* Add feature flag soon pill

packages/twenty-front/src/modules/billing/graphql/billingPortalSession.ts

@@ -0,0 +1,9 @@
+import { gql } from '@apollo/client';
+
+export const BILLING_PORTAL_SESSION = gql`
+  query BillingPortalSession($returnUrlPath: String) {
+    billingPortalSession(returnUrlPath: $returnUrlPath) {
+      url
+    }
+  }
+`;