finish setup insert method, refactor sql migration file

internal/foundry/temp_models/json/index.go

@@ -10,16 +10,20 @@ type Index struct {
 	Type   string `json:"type"`
 }
 
-func (i *Index) ToDB(dest *db.Index) bool {
+func (i *Index) ToDB(dest **db.Index) bool {
 	if dest == nil {
 		return false
 	}
 
-	dest.ID = i.Id
-	dest.Folder = i.Folder
-	dest.Img = i.Img
-	dest.Name = i.Name
-	dest.Type = i.Type
+	index := &db.Index{
+		ID:     i.Id,
+		Folder: i.Folder,
+		Img:    i.Img,
+		Name:   i.Name,
+		Type:   i.Type,
+	}
+
+	*dest = index
 
 	return true
 }