Document hosting Northstar server on ARM CPUs

[GeckoEidechse]

Northstar seems to be able to run on ARM CPUs now using box64. However the process is not super straightforward so we should collect information on the necessary steps.

ptitSeb/box64#210 (comment)

[p0358]

First things first you should add some kind of main frame performance monitoring (screenshot from tfods below) to figure out under which circumstances you can run it with acceptable performance. To my awareness Northstar still doesn't have anything like that, and without that you'll be like children in the dark, and so often are even people running it on weaker x64 machines.

But yeah some general instructions could be useful, but I think a Docker container for most people to run should be created, as Wine is considerably trickier to set up than without emulation at least.

[GeckoEidechse]

Waiting on next-gen Docker image as this will massively simplify the process ^^