Post-burn file patching

[ifd3f]

This functionality would be useful for stuff like:

• adding a ssh and wpa_supplicant file to raspberry pi images
• adding some configs to an install image

UX

A MVP would look like running a script after burn is complete. So the raspberry pi example script might look like:

touch $out1/ssh
wpa_passphrase mywifi mypassword > $out1/ssh

where $out1, $out2, $out3, ... are environment vars set to paths of mounted partitions.