feat: add snjs package

packages/snjs/lib/Migrations/MigrationServices.ts

@@ -0,0 +1,20 @@
+import { SNSessionManager } from '../Services/Session/SessionManager'
+import { ApplicationIdentifier } from '@standardnotes/common'
+import { ItemManager } from '@Lib/Services/Items/ItemManager'
+import { EncryptionService } from '@standardnotes/encryption'
+import { DeviceInterface, InternalEventBusInterface, Environment } from '@standardnotes/services'
+import { ChallengeService, SNSingletonManager, SNFeaturesService, DiskStorageService } from '@Lib/Services'
+
+export type MigrationServices = {
+  protocolService: EncryptionService
+  deviceInterface: DeviceInterface
+  storageService: DiskStorageService
+  challengeService: ChallengeService
+  sessionManager: SNSessionManager
+  itemManager: ItemManager
+  singletonManager: SNSingletonManager
+  featuresService: SNFeaturesService
+  environment: Environment
+  identifier: ApplicationIdentifier
+  internalEventBus: InternalEventBusInterface
+}