feat: добавить новый backend и cabinet

- добавлен новый Nest backend для auth, projects и project access tokens
- добавлена control-plane схема БД и миграция Drizzle
- перенесён старый backend в old-backend
- добавлен React/Vite cabinet с auth-only входом и Mantine layout
- обновлены workspace scripts и lockfile

apps/cabinet/src/business/auth/index.ts

@@ -0,0 +1,3 @@
+export { authFactory } from './auth.factory'
+export type { AdminSession, AuthApi, LoginAction, LoginInput, LogoutAction } from './types/auth-api.type'
+export type { AuthFactory } from './types/auth-factory.type'