launcher: create paddings for foldables

This creates a new padding file that bring some foldables up to spec
with VisD. For 2 panel layouts it now uses workspace margin instead of
cell layout padding.

Bug: 191879424
Fixes: 200035429
Test: checking paddings in HSV
Change-Id: I11b8e1afd76f535368d4c26e31630ce496171e13