Missed `DispatchQueue.DispatchSync<T>(Func<T> func)` method

[mykyta-bondarenko]

Now we can pass only Action into the DispatchQueue.DispatchSync methods. But we can do it with the native API: https://developer.apple.com/documentation/dispatch/dispatchqueue/2016081-sync.
Could we add methods with overloading Func<T>?

[spouliot]

dispatch_sync_f returns void.

Maybe we could do some hack with the void *context parameter do allow a return value.