lug-helper v2.1

Delete all the things!

• New and improved runner/dxvk removal system ⛔
• Select multiple items and remove them all at once! Go crazy! But maybe not too crazy!

Other changes

• Added a minimum winetricks version requirement to the preflight check
• Fixed an issue with Lutris flatpak detection when both the stable and beta channels are installed
• Fixed an issue where the Helper would not fallback to terminal menus if zenity is broken