icebitsy V1.1a: removed ibom

Added generated bom exports to gitignore.

icebitsy v1.1a: Updated bom keys.

More work on info cards

icebitsy v1.1a: Made the USB-C connector tabs paste in hole.

WIP bitsy-v1.1a info card

Tweak bitsy-v1.1a renders

Finish up some more TODOs - change LED resistor values - update interactive BOM - update PDFs - clean up PCB planes & comments

Finish up v1.1a Still TODO: - check LED resistor values, sync to PCB file - check JP3 comment in schematic - should P36 be connected to SPI_CS or FLASH_CS? - update ibom.html - update PDFs - finish top/bottom info sheets - update README

More routing