arm64 Linux dedicated server support

[starform-andrew]

What problem could Sentry solve that it doesn't?

Unity 6.3 added support for dedicated servers to run on arm based Linux. It would be beneficial to everyone looking to make the switch to arm based servers if the native library was pre-built and included in the plugin, instead of having to build it ourselves.

[linear]

UNITY-193

[bitsandfoxes]

Hey, thanks for reaching out! We'll add it.

[bitsandfoxes]

Found your post in the discussions. That's actually blocking us from properly providing support. Best I could do is put the arm64 artifact into the plugin but afaik it would not get picked up properly during build.

[starform-andrew]

Yeah, saw your response. We have a fairly bespoke build process so I should be able to work around things myself, but this is fairly problematic. Hilariously, if you edit the metafile to specify ARM64 manually, the build process will pull the plugin in, but it also pulls in x86_64 plugins (leading to file collisions if they are named the same, yay). I am submitting two bugs to Unity through the editor: Not being able to select the CPU architecture for Linux, and that the arm64 Linux dedicated server build process pulls in x86_64 libraries. I'll add you as an additional contact on the bugs.