Feature request: add orangepi5plus to mkplatformfs.sh

[HornetMaidan]

I know this board really lacks in community and documentation around it - I would love to see it supported here. It's a powerful board, and I really like the price/performance of it. I also tried flashing stock ROOTFS tarballs and work from there, but to no avail.

Honestly, my first time creating a request here, so please tell me if I'm doing anything wrong.

http://www.orangepi.org/html/hardWare/computerAndMicrocontrollers/details/Orange-Pi-5-plus.html