Add csharp.yml

[C#] 0.3.4.

[C#] 0.3.3.

[C#] 0.3.2. Release notes updated.

Version 0.3.1. Release notes updated.

Added build command.

Version 0.2.2. Release notes updated.

Test fix for linux.

Version 0.2.0. Complete redesign.

Version 0.1.0. Release notes updated.