added MigrateStructure to SetupCheck

split the MigrateStructure to be handled in each package seperately

backend/user/database.go

@@ -0,0 +1,13 @@
+package user
+
+import "bamort/database"
+
+func MigrateStructure() error {
+	err := database.DB.AutoMigrate(
+		&User{},
+	)
+	if err != nil {
+		return err
+	}
+	return nil
+}