Thread resume for UWP and other platforms

[CedricGuillemet]

Done for WIN32
missing for

• UWP
• Android
• iOS
• MacOS

Just a reminder here
microsoft/arcana.cpp#4

[CedricGuillemet]

@syntheticmagus : Specifically, a reminder to switch over to using dispatcher features to suspend and resume as soon as such features are available.

[bghgary]

@CedricGuillemet Can you verify this is working now? If so, please close.

[CedricGuillemet]

It's not fixed for MacOS. When minimizing the window, I get a crash and this error in the log:

libc++abi: terminating with uncaught exception of type std::runtime_error: SafeTimespanGuarantor can only be locked from a closed state

It works fine with iOS.