Merge pull request #10 from mkArtak/custom

Upgraded the projects to .NET 8

Updated the Wizard package version

Added readonly-state capabilities.

Updated to version 0.0.6

Added state-value removal APIs

Added an indication about navigation direction to the wizard page.

Added ability for the WizardPage to abort navigation.

Fixed the issue causing the loading of the first wizard page not to fire

- Renamed OnPageChanging to OnPageLoading

- Renamed OnPageChanged to OnPageLoaded
- Fixed the bug where OnPageLoading won't fire on the first page load

Upgraded to version 0.0.3.5-alpha