Allow to set the type of header instead of defaulting to string

[Daniel-Jacob]

Currently all headers are documented as string. In my case i want to set it as a boolean. Perhaps would be good to introduce a type property on the @Header annotation.

[github-actions]

Welcome to Springwolf. Thanks a lot for reporting your first issue. Please check out our contributors guide and feel free to join us on discord.

[github-actions]

The change is staged for release and will be part of the next release.

If you want to try and verify it in your application today,
use the latest 1.X.0-SNAPSHOT build as described in our README.md > Testing SNAPSHOT version

Thank you for the report/contribution!

[github-actions]

The change is available in the latest release (v2.0.0). 🎉

Thank you for the report/contribution and making Springwolf better!