feat: add nickname field for user

api/handler/user_handler.go

@@ -95,6 +95,7 @@ func (h *UserHandler) Register(c *gin.Context) {
 	salt := utils.RandString(8)
 	user := model.User{
 		Password:   utils.GenPassword(data.Password, salt),
+		Nickname:   fmt.Sprintf("极客学长@%d", utils.RandomNumber(6)),
 		Avatar:     "/images/avatar/user.png",
 		Salt:       salt,
 		Status:     true,
@@ -256,6 +257,7 @@ func (h *UserHandler) Session(c *gin.Context) {
 
 type userProfile struct {
 	Id          uint                 `json:"id"`
+	Nickname    string               `json:"nickname"`
 	Mobile      string               `json:"mobile"`
 	Avatar      string               `json:"avatar"`
 	ChatConfig  types.UserChatConfig `json:"chat_config"`