MinGW AArch64/ARM64 target?

[Neal Gompa]

Hey folks,

With the advent of Windows on Arm (WoA) computers, I was wondering if
we're going to start offering an aarch64/arm64 target with the MinGW
toolchain. I think it probably makes sense to start offering support
for this now as it seems like WoA isn't a complete failure this time
around.

In particular, it'd be nice to eventually be able to build Fedora
Media Writer as a WoA app, and it would enable filling out Wine's WoA
target too.

--
真実はいつも一つ！/ Always, there's only one truth!