feat: add snjs package

packages/snjs/lib/Services/Sync/SyncClientInterface.ts

@@ -0,0 +1,12 @@
+import { SyncOpStatus } from './SyncOpStatus'
+import { SyncOptions } from '@standardnotes/services'
+
+export interface SyncClientInterface {
+  sync(options?: Partial<SyncOptions>): Promise<unknown>
+
+  isOutOfSync(): boolean
+
+  getLastSyncDate(): Date | undefined
+
+  getSyncStatus(): SyncOpStatus
+}