Embed debugging symbols

[lostmsu]

This greatly simplifies debugging of SharpCompress source because it removes the need to setup nuget symbol downloading.

It also simplifies debugging scenarios for anyone who is not using NuGet for some reason (e.g. git submodule, or another build system).

[adamhathcock]

This is the a good idea.

Any chance this can include changes to get the build on nuget have three green checks? https://nuget.info/packages/SharpCompress/0.37.2

I was going for https://learn.microsoft.com/en-us/nuget/create-packages/symbol-packages-snupkg with snupkg but they're out of favor?

[lostmsu]

TBH I don't want to figure out the build system.

For regular .NET project I'd just add /p:ContinuousIntegrationBuild=true to the Github actions file. But to do it cleanly with what I saw one would need to create a build option, that the target would convert to this string, and then in GitHub actions set the option.

[adamhathcock]

I think #864 does more. I still don't do releases with GA so I just dumped ContinuousIntegrationBuild in it