Database related operation files reorganization

internal/database/push.go

@@ -0,0 +1,15 @@
+package database
+
+import "context"
+
+func PushDocument(location Location, document interface{}) error {
+	client := GetNewClient()
+	collection := client.Database(location.Database).Collection(location.Collection)
+	defer client.Disconnect(context.TODO())
+
+	_, err := collection.InsertOne(context.TODO(), document)
+	if err != nil {
+		return err
+	}
+	return nil
+}