LibGfx+icc: Print pcs illuminant

Author: https://github.com/nico
Commit: 79badfd650
Pull-request: https://github.com/SerenityOS/serenity/pull/16756
Reviewed-by: https://github.com/gmta

Userland/Utilities/icc.cpp

@@ -37,6 +37,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
         outln("  CMM bits: 0x{:04x}", color_management_module_bits);
 
     outln("rendering intent: {}", Gfx::ICC::rendering_intent_name(profile->rendering_intent()));
+    outln("pcs illuminant: {}", profile->pcs_illuminant());
 
     return 0;
 }