Successful cpack with fixup bundle on arm64 M2.
Signing of the .app and all binary dependencies within the cmake install process.
Fixed minor issues with OSX compilation.
Discarding use of ZENITY under linux (previously used with the tinyfiledialog) because snapcraft makes it impossible to use :(. Reimplementation of GTK+ dialogs directly inside vimix code. Note: no changes for OSX. Complete cleanup of cmake file.