Changelog:

• Added RoundedBorderRadius property to EditBox, TextArea, ComboBox and Tabs renderers
• Added getLeftPlusRight and getTopPlusBottom functions to Outline class
• Added TGUI_BUILD_CXX20_MODULE option to CMake to build TGUI as a c++20 module
• EditBox and TextArea now support Ctrl+Backspace and Ctrl+Delete to delete words
• ScrollablePanel didn't transform the right click position for its child widgets