Allow end-user to supply custom files
Allow end-user to supply custom files

User supplied files are added to the target system during install.
Two methods are offered. Allowing end-users to select the one most
appropriate to their use-case.

beylsp/rpi-installer,yodaaut/raspbian-ua-netinst,racing-tech/rrp-raspi-installer,FooDeas/raspberrypi-ua-netinst,racing-tech/rrp-raspi-installer,beylsp/rpi-installer