[C#] rework tuple scopes to match Python#2969

Merged

deathaxe merged 4 commits intosublimehq:masterfrom forkeith:csharp_tuple_scope

Aug 23, 2021

+175-150

Commits on Aug 18, 2021

Commits on Aug 19, 2021

[C#] improvements from PR review
keith-hall
committed