[PP-1] Store allowed widths for xb_parametrized_width in third party settings

wim leers → credited lauriii → .

FYI let's include here the discussion @lauriii started at https://git.drupalcode.org/project/experience_builder/-/merge_requests/9..., where he seems to be leaning towards using simple config 🙏

And for the sake of expediency and landing working things, we may broaden the scope here to include doing ParametrizedImageStyle extends ImageStyle, per @larowlan at https://git.drupalcode.org/project/experience_builder/-/merge_requests/9....

✨ Add automated image optimization to image component Active is in! 🚢