Release v0.5.22

Rename TestComponent to TestMarkupComponent for Clarity

- Updated the test class name from `TestComponent` to `TestMarkupComponent` to better reflect its purpose and association with the Azu::Markup module.
- Adjusted the instantiation in the integration test to match the new class name, ensuring consistency and clarity in the test suite.

These changes enhance the readability and maintainability of the test specifications, supporting ongoing development efforts in the Azu framework.