[Apple] An update reinstall fails due to .DS_Store

[SimonBenAnderson]

When updating mGear using the Drag and Drop file on a Mac device, the update fails due to .DS_Store file already existing

This is due to the OS creating these files when a folder gets a files added, or has some attributes applied to it. This results in shutil failing at https://github.com/mgear-dev/mgear4/blob/fc31ea56cde37ad68a08f8860e9069ae29fd9888/drag_n_drop_install.py#L218