Refactor router setup to split routes by auth/protected boundary

internal/server/routes_public.go

@@ -0,0 +1,13 @@
+package server
+
+import (
+	"github.com/gin-gonic/gin"
+
+	"github.com/dhao2001/mygo/internal/app"
+	"github.com/dhao2001/mygo/internal/handler"
+)
+
+func setupPublicRoutes(rg *gin.RouterGroup, webApp *app.WebApp) {
+	versionHandler := handler.NewVersionHandler(webApp.Version)
+	rg.GET("/version", versionHandler.Get)
+}