Requesting VID/PID for the OHS2020 badge

[mwelling]

Adding a port and a UF2 bootloader for the open hardware summit badge.

Was asked to change the VID/PID in the PR.
#2528

Thank you!

[ladyada]

OHS2020 badge VID 0x239A PID 0x007F # bootloader
PID 0x807F # arduino
PID 0x8080 # circuitpython

[mwelling]

Thanks!

[ladyada]

:)