feat: add user balance

backend/app/http/users.go

@@ -18,6 +18,7 @@ type UserInfo struct {
 	CreatedAt time.Time `json:"created_at,omitempty"`
 	Username  string    `json:"username,omitempty"`
 	Avatar    string    `json:"avatar,omitempty"`
+	Balance   int64     `json:"balance,omitempty"`
 }
 
 // @Router	/users/profile [get]
@@ -28,6 +29,7 @@ func (ctl *users) Profile(ctx fiber.Ctx, user *model.Users) (*UserInfo, error) {
 		CreatedAt: user.CreatedAt,
 		Username:  user.Username,
 		Avatar:    *user.Avatar,
+		Balance:   user.Balance,
 	}, nil
 }