Gets Broadside's own sRGB profile, the ICC engine's default RGB target.
public static IccProfile Srgb { get; }
IEC 61966-2-1 written as an ICC.1:2022 version 4.4 display profile (§8.4.3): the sRGB primaries adapted to D50 by the Bradford
transform (Annex E, recorded in chad, §9.2.15), the sRGB curve as parametric function type 3 (§10.18), the PCS white as
media white point (§9.2.34). Generated in-house, so no third-party profile ships; CreateSrgbProfileData() gives its
bytes, for instance to embed as an ICCBased space or an output intent.