Add linux-arm and linux-arm64 native NuGet dependency.

[EraYaN]

Build scripts are here: https://github.com/jellyfin/jellyfin-skiasharp-native

To test after building and packing

1. cd Emby.Drawing.Skia
2. dotnet add package Jellyfin.SkiaSharp.NativeAssets.LinuxArm -s ..\..\jellyfin-skiasharp-native\Jellyfin.SkiaSharp.NativeAssets.LinuxArm
3. dotnet add package Jellyfin.SkiaSharp.NativeAssets.LinuxMusl -s ..\..\jellyfin-skiasharp-native\Jellyfin.SkiaSharp.NativeAssets.LinuxMusl

-s specifies the source.

Let's drop Musl for now, dotnet is clearly not ready yet. Even icu-libs on alpine pull in libstdc++.

[EraYaN]

Uploaded: https://www.nuget.org/packages/EraYaN.SkiaSharp.NativeAssets.LinuxArm/1.68.0 So drone build should succeed next time.

[JustAMan]

I've kicked new Drone task.

@jellyfin/core do you guys think we need to publish this SkiaSharp under Jellyfin nuget acc?

[EraYaN]

New build targets arm64 in GN instead of aarch64. Now it doesn't have *UND* symbols. It now loads in debian aarch64 on qemu. Drone might fail since package publish might take an hour.

EDIT: also works on a Odroid C2. (S905 based board)

[JuliusFreudenberger]

I tested a build from @EraYaN on my Odroid C2, which is aarch64. I ran DietPi as OS, which is basically Debian 9 for arm architectures.
It worked and didn't log any error regarding Skia.

[nvllsvm]

Just a question - which package are the Musl ARM libs included in?

[EraYaN]

@nvllsvm These are not uploaded yet and will break the build.

There is no musl+arm combination, since there is also no sqlite for that platform. I also don't think there is dotnet core support.

[EraYaN]

Alright the musl one will need some extra work, it does not load now. And .NET does not seem to have actual musl support, even though the docs talk about it. Put this on hold until tomorrow or even the weekend or something.