refactor(server): auth dto (#5593)

* refactor: AuthUserDto => AuthDto

* refactor: reorganize auth-dto

* refactor: AuthUser() => Auth()

server/test/fixtures/api-key.stub.ts

@@ -7,7 +7,7 @@ export const keyStub = {
     id: 'my-random-guid',
     name: 'My Key',
     key: 'my-api-key (hashed)',
-    userId: authStub.admin.id,
+    userId: authStub.admin.user.id,
     user: userStub.admin,
   } as APIKeyEntity),
 };