first demo

internal/model/SubmitRequest.go

@@ -0,0 +1,9 @@
+package model
+
+type SubmitRequest struct {
+	Code     string `json:"code" binding:"required"`
+	Language string `json:"language" binding:"required"`
+	Run      bool   `json:"run"`
+	Stdin    string `json:"stdin"`
+	BackEnd  string `json:"backend"`
+}