[AC-1607] Add offboarding survey to subscription pages (#7809)

* Add offboarding survey to subscription pages

* Cleaning up unused code

* Removing unused eslint suppression

* Product updates

* Jared's feedback

libs/common/src/billing/services/billing-api.service.ts

@@ -0,0 +1,24 @@
+import { ApiService } from "../../abstractions/api.service";
+import { BillingApiServiceAbstraction } from "../../billing/abstractions/billilng-api.service.abstraction";
+import { SubscriptionCancellationRequest } from "../../billing/models/request/subscription-cancellation.request";
+
+export class BillingApiService implements BillingApiServiceAbstraction {
+  constructor(private apiService: ApiService) {}
+
+  cancelOrganizationSubscription(
+    organizationId: string,
+    request: SubscriptionCancellationRequest,
+  ): Promise<void> {
+    return this.apiService.send(
+      "POST",
+      "/organizations/" + organizationId + "/cancel",
+      request,
+      true,
+      false,
+    );
+  }
+
+  cancelPremiumUserSubscription(request: SubscriptionCancellationRequest): Promise<void> {
+    return this.apiService.send("POST", "/accounts/cancel-premium", request, true, false);
+  }
+}