use inGamut culori func

[AlexDroomer]

These changes will add a slight rendering improvement. Benchmark --benchmark-color: #a36825 searchParams: ?bench#70,0.1,296,100

Freeze max 5 Freeze sum 7 Worker max 46 Worker sum 149 Paint 46

export const inRGB = inGamut('rbg');
export const inP3 = inGamut('p3');
export const inRec2020 = inGamut('rec2020');

[ai]

Thanks!