feat: add sending user requests to process (#1908)

* feat: add sending user requests to process

* fix(snjs): yarn lock

* fix(snjs): imports

* fix: specs

packages/services/src/Domain/User/UserClientInterface.ts

@@ -0,0 +1,9 @@
+import { DeinitSource } from '../Application/DeinitSource'
+
+export interface UserClientInterface {
+  deleteAccount(): Promise<{
+    error: boolean
+    message?: string
+  }>
+  signOut(force?: boolean, source?: DeinitSource): Promise<void>
+}