✨ add api validation signature

api/sms_api/dto/request_dto.go

@@ -0,0 +1,7 @@
+package dto
+
+type SmsRequest struct {
+	Phone string `json:"phone" binding:"required"`
+	Angle int64  `json:"angle" binding:"required"`
+	Key   string `json:"key" binding:"required"`
+}