[Feature request] Support for HDR Output

[SaltyBet]

Quick summary

Support for HDR Output.

Details

Support for HDR Output.

Would benefit anyone gaming using:

• An HDR-capable display, like an HDR monitor or HDR TV.
• An HDR-capable mobile gaming device, like a Steam Deck OLED.

Emulators with support for HDR Output:

• Dolphin.
• RetroArch.

[LasagnaPie]

This should also include color space and gamma correction. https://github.com/dolphin-emu/dolphin/pull/11850