Build warning NETSDK1206 since .NET 8

[mhartmair-cubido]

Since .NET 8 there is a build warning:

##[warning]C:\Program Files\dotnet\sdk\9.0.101\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.targets(322,5): Warning NETSDK1206: Found version-specific or distribution-specific runtime identifier(s): centos.7-x64, centos.8-x64, debian.10-x64, debian.11-x64, debian.9-x64, fedora.32-x64, fedora.33-x64, fedora.34-x64, opensuse-x64, opensuse.15.1-x64, osx.10.15-x64, osx.11-x64, rhel.7-x64, rhel.8-x64, ubuntu.16.04-x64, ubuntu.18.04-x64, ubuntu.20.04-x64, ubuntu.21.04-x64. Affected libraries: MediaInfo.Core.Native. In .NET 8.0 and higher, assets for version-specific and distribution-specific runtime identifiers will not be found by default. See https://aka.ms/dotnet/rid-usage for details.

[cjee21]

See #819 (comment)

The nuget package is not official or maintained by MediaArea as far as I know.