ShareX - HDR and Nvidia Overlay Compatible

I offer no warranty or support, use at your own risk. I implemented the changes recommended at the issue comment below into the fork located here https://github.com/GotoFinal/ShareX-HDR

Be sure to check the Use WinRT API box located here: for HDR conversion to SDR

ShareX#6147 (comment)

This is my first time doing anything like this. I have no real coding or compiling experience, but I hope this helps!