update: Add JSON query support

lib/util.go

@@ -13,6 +13,14 @@ import (
 	"github.com/gofiber/fiber/v2"
 )
 
+func ListToStr(l []string) string {
+  res := ""
+  for _, e := range l {
+    res += e+" "
+  }
+  return res
+}
+
 func RenderError(c *fiber.Ctx, code int) error{
   var msg string = "Server Error"
   c.Status(code)