feat: add services package

packages/services/src/Domain/Application/ApplicationInterface.ts

@@ -0,0 +1,22 @@
+import { ApplicationIdentifier } from '@standardnotes/common'
+
+import { DeinitCallback } from './DeinitCallback'
+import { DeinitMode } from './DeinitMode'
+import { DeinitSource } from './DeinitSource'
+import { UserClientInterface } from './UserClientInterface'
+
+export interface ApplicationInterface {
+  deinit(mode: DeinitMode, source: DeinitSource): void
+
+  getDeinitMode(): DeinitMode
+
+  get user(): UserClientInterface
+
+  readonly identifier: ApplicationIdentifier
+}
+
+export interface AppGroupManagedApplication extends ApplicationInterface {
+  onDeinit: DeinitCallback
+
+  setOnDeinit(onDeinit: DeinitCallback): void
+}