完成前后端框架搭建，完成聊天页面布局

server/chat_handler.go

@@ -0,0 +1,11 @@
+package server
+
+import (
+	"fmt"
+	"github.com/gin-gonic/gin"
+	"net/http"
+)
+
+func (s *Server) Chat(c *gin.Context) {
+	c.JSON(http.StatusOK, gin.H{"code": 0, "message": fmt.Sprintf("HELLO, ChatGPT !!!")})
+}