add improvements to borealis

[AorsiniYT]

This pull request introduces significant updates to the CMake configuration, application localization, and button customization in the project. The changes streamline cross-compilation setup, enhance internationalization (i18n) features, and add flexibility for button content customization. Below is a summary of the most important changes:

Cross-compilation improvements:

• Refactored MinGWCross.cmake to address compatibility issues with CMake 3.28+ by reworking toolchain configuration and introducing a workaround for MSYSTEM_PREFIX. This includes setting compilers, linker flags, and pkg-config paths explicitly.

Localization enhancements:

• Added Application::setLocale to allow forcing the application's locale before initialization. This includes a new forcedLocale static variable and logic to prioritize it in getLocale(). [1] [2] [3] [4]

Button customization:

• Introduced Button::setCustomContent to replace the default button content with a custom view, enabling more flexible UI designs. [1] [2]

Miscellaneous:

• Enabled Yoga event handling by defining YG_ENABLE_EVENTS in application.cpp.

These changes collectively improve the project's configurability, internationalization support, and UI customization capabilities.