Add Directory.Build.props

[Adam Stachowicz (Saibamen)]

Reduce csproj size

[Martí Climent (marticliment)]

Does dotnet build and dotnet publish still work? I had issues in the past with .prop files and the dotnet command...

[Adam Stachowicz (Saibamen)]

Does dotnet build and dotnet publish still work?

dotnet build - yes -> see GH Actions.
dotnet publish - don't know. You can add dotnet publish command to GH Actions (but IMO after dotnet test command)

[Adam Stachowicz (Saibamen)]

FYI: I added dotnet publish --configuration Release --no-restore command to GH Actions in this PR

[Adam Stachowicz (Saibamen)]

Martí Climent (@marticliment): ping

[Martí Climent (marticliment)]

Sorry, I haven't had the time to check it yet