fix: support jst_ph_N format and dynamic PH silkscreen sizing#518

lucaferri-dev wants to merge 2 commits intotscircuit:maintscircuit/footprinter:mainfrom

lucaferri-dev:fix-jst-ph-pin-countlucaferri-dev/footprinter:fix-jst-ph-pin-countCopy head branch name to clipboard