changed kicad 5 files to kicad 6

Revert "changed kicad 5 files to kicad 6 (however, MAX6675ISA+ isn't loading correctly)" This reverts commit f1a2998ac072069684779de8874e2d7e30d4ea87.

changed kicad 5 files to kicad 6 (however, MAX6675ISA+ isn't loading correctly)

slightly clearer

Added RF switch symbol

add symbol libraries, and cleanup

Cleanup #1

Revert schematics so that it can merge

Update schematics

Update Schematic blocks