Test version: Improved Xbox console HDR screen capture compatibility

Minimally tested version for improved Xbox console screen capture compatibility:

• Automatically detects more types of Xbox HDR screen captures as BT.2100 PQ
• Command line flag to force all images to load as BT.2100 PQ color space:

hdrimageviewer -forcebt2100

• Using the new refactored app with C# frontend (not fully tested)

NOTE: This app will get installed side by side with any official versions of the app, it shows up as version 0.0.1.0.