✨ 完善基础架构，新增部分问题接口

route/problem.go

@@ -0,0 +1,10 @@
+package route
+
+import (
+	"github.com/gin-gonic/gin"
+	"online_code/api"
+)
+
+func problem(g *gin.RouterGroup) {
+	g.GET("/list", api.ProblemApi().GetProbleList)
+}