Use gui-description instead of help page

Migrated from https://bugs.launchpad.net/inkscape/+bug/200983

In previous versions, there was no tooltips for extension options. We should check the extensions with a "Help" tab whether some of the contents can be converted to tooltips.

Examples: Color HSL adjust, function plotter, Voronoi...

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information