Rework HTSSOP-28 and 32
Rename HTSSOP-32 to include mask size. Add HTSSOP-28 version with reduced mask size for LED driver
The footprints are used by PR: https://github.com/KiCad/kicad-symbols/pull/126
Might interfere with https://github.com/KiCad/kicad-footprints/pull/207