feat: add subscription manager to handle subscription sharing (#1517)

* feat: add subscription manager to handle subscription sharing

* fix(services): add missing methods to the interface

* fix(services): add subscription manager specs

* feat(snjs): add subscriptions e2e tests

* fix(snjs): add wait in subscription cancelling test

* fix(snjs): checking for canceled invitations in tests

* fix(snjs): add e2e test for restored limit of subscription invitations

* chore(lint): fix linter issues

packages/snjs/lib/Services/ComponentManager/ComponentManager.ts

@@ -11,6 +11,8 @@ import {
   ComponentMutator,
   PayloadEmitSource,
   PermissionDialog,
+  Environment,
+  Platform,
 } from '@standardnotes/models'
 import { SNSyncService } from '@Lib/Services/Sync/SyncService'
 import find from 'lodash/find'
@@ -26,8 +28,6 @@ import {
   ComponentViewerInterface,
   DesktopManagerInterface,
   InternalEventBusInterface,
-  Environment,
-  Platform,
   AlertService,
 } from '@standardnotes/services'