feat(users): add get user by id endpoint

backend/src/v1/users/router.py

@@ -1,12 +1,14 @@
 from __future__ import annotations
 
 from typing import Annotated
+from uuid import UUID
 
 from fastapi import APIRouter, Depends
 
 from v1.users.dependencies import get_user_service
 from v1.users.schemas import UserResponse, UserSearchRequest, UserUpdateRequest
 from v1.users.service import UserService
+from v1.friendships.schemas import UserBasicInfo
 
 
 router = APIRouter(prefix="/users", tags=["users"])
@@ -33,3 +35,11 @@ async def search_users(
     service: Annotated[UserService, Depends(get_user_service)],
 ) -> list[UserResponse]:
     return await service.search_users(payload)
+
+
+@router.get("/{user_id}", response_model=UserBasicInfo)
+async def get_user(
+    user_id: UUID,
+    service: Annotated[UserService, Depends(get_user_service)],
+) -> UserBasicInfo:
+    return await service.get_user_by_id(user_id)