[MAJOR] Moves namespaces from Postgrest to Supabase.Postgrest
Re: #135 Update nuget package name postgrest-csharp to Supabase.Postgrest
Update dependency: gotrue-csharp@5.0.0
Re: #135 Update nuget package name gotrue-csharp to Supabase.Gotrue
Re: #89, Only add access_token to request body when it is explicitly declared.
[MINOR] Re: #89 Update signature for SignInWithIdToken which adds an optional accessToken parameter, update doc comments, and call DestroySession in method