More tone mapping

[natural-harmonia-gropius]

• [x] ST 2094-10:2021 - SMPTE Standard - Dynamic Metadata for Color Volume Transform - Application #1
• [x] ST 2094-20:2016 - SMPTE Standard - Dynamic Metadata for Color Volume Transform - Application #2 BT.2446A
• [x] ST 2094-30:2016 - SMPTE Standard - Dynamic Metadata for Color Volume Transform - Application #3 No curve
• [ ] ST 2094-40:2020 - SMPTE Standard - Dynamic Metadata for Color Volume Transform - Application #4
• [x] Android Oreo & Android 13 Oreo designed to 100nit? 13 a bit better but still just watchable
• [x] Web Browsers Chrome use reinhard, Safari use bt2390
• [ ] Exposure Fusion – local tonemapping for real-time rendering
• [ ] Histogram Cumulative?