v4.2.0-beta01 - Omega compatibility

This release provides basic Kodi 21 Omega compatibility for Eminence. I've created this release mostly for myself; just can't live without this great skin. If and/or as soon as compatibility is provided upstream, I will remove this release and fork.
For the time being you could help out. The "Favourites" item needs skinning, and I'm not a skinner.

What's Changed

• Basic compatibility with Omega by @maghiel in #1
  ** Update xmbc.gui to 5.17.0
  ** Added MyFavourites.xml, see https://forum.kodi.tv/archive/index.php?thread-375914-2.html
  ** added favourites to skin default menu
  ** override common favourites menu item
• bump plugin.video.themoviedb.helper to 4.10.14
• bump script.skinshortcuts to 2.0.3
• bump script.image.resource.select to 3.0.2

New Contributors

• @maghiel made their first contribution in #1

Full Changelog: https://github.com/maghiel/skin.eminence.2/commits/4.2.0-beta01