use re.findall in all palette creation manipulation scripts

[earthbound19]

some python script that edit / create / sort palettes use a regex pattern match to find sRGB hex color codes, but may only find the first on a line. Change them if needed to use re.findall to find all matches on a line.

re: https://chatgpt.com/c/6782b34d-aeac-8010-bb95-3aad0e629337 (deprecating sortSRGBHexColorsColoraide.sh)

[earthbound19]

but perhaps first resolve #121