Switch symbols to snupkg

[PhyxionNL]

See appveyor/ci#2753 and https://help.appveyor.com/discussions/problems/27680-deployment-issue-nuget.

[PhyxionNL]

Not sure if anything needs to be flipped in AppVeyor for this, so probably best for @chmorgan to do.

[chmorgan]

Hmm. What is a snupkg? If anyone wants to propose a GitHub workspace file change I'll look at merging it. I saw some points about GitHub not support snupkg yet though.

[PhyxionNL]

It's a normal NuGet package with symbols. Now that AppVeyor is gone it might not be needed anymore.
<IncludeSymbols>true</IncludeSymbols> will probably be enough.

[chmorgan]

Where do we set that? I don't see any options and can't find a mention of IncludeSymbols text in any files.

[PhyxionNL]

It belongs in the csproj, I think INCLUDE_SYMBOLS must also be set for the action, see https://github.com/brandedoutcast/publish-nuget.

[chmorgan]

@PhyxionNL I noticed nuget was saying a symbols package was pushed. Does this mean we are all set now and can close this issue out?

[PhyxionNL]

Yeah, it's good now it seems 👍