chore: generate mfa secret in backend (#2930) [skip e2e]

* chore: get mfa secret from backend

* chore: remove unused code

packages/snjs/lib/Services/Settings/SettingsServerInterface.ts

@@ -7,6 +7,10 @@ import {
 } from '@standardnotes/responses'
 import { UuidString } from '@Lib/Types/UuidString'
 
+export interface MfaSecretResponse {
+  secret: string
+}
+
 export interface SettingsServerInterface {
   listSettings(userUuid: UuidString): Promise<HttpResponse<ListSettingsResponse>>
 
@@ -15,6 +19,7 @@ export interface SettingsServerInterface {
     settingName: string,
     settingValue: string,
     sensitive: boolean,
+    totpToken?: string,
   ): Promise<HttpResponse<UpdateSettingResponse>>
 
   getSetting(
@@ -32,6 +37,8 @@ export interface SettingsServerInterface {
     sensitive: boolean,
   ): Promise<HttpResponse<UpdateSettingResponse>>
 
+  getMfaSecret(userUuid: UuidString): Promise<HttpResponse<MfaSecretResponse>>
+
   deleteSetting(
     userUuid: UuidString,
     settingName: string,