Improve credential prototype import functionality

- Fix import-json to check for existing UUID and update instead of insert
- Add proper normalization of JSON data before validation
- Fix undefined variable issues in import logic
- Update code validation error message for new regex pattern
- Add comprehensive test coverage for credential prototype operations
- Enhance test-cli.sh with crprototype CRUD operations and format validation
- Create CredentialProtoTypeCommandTest.php with PHPUnit tests for all actions

Author: Vitexus