[infrastructure] [macos] use QGIS-Mac-Packager dependencies to setup MacOS CI build with GitHub workflows. Use CMake's define QGIS_MAC_DEPS_DIR to define folder to dependencies
Search for libraries first, before includes, so any frameworks found can
have their Headers subdirectory added to search paths for includes.
- Reintroduce qwt and qscintilla2 base library names for searching.
- Main C++ core and gui classes and desktop app integration
- Support for authentication method plugins
- Does not contain any integration with service connections