Feature request - Touchscreen: long tap = right click

[gm-333]

Hi, coming from win using a convertible laptop.
In win if i long tap anywhere on screen on my touchscreen the right-click menu opens. This is very practical and I miss it on Mint. In regular mode it's a time saver, in tablet mode i really need it as the touchpad is gone.
It's also standard behavior on any Android touch device afaik.

Would be great if this could be implemented. otherwise touch works very well