[css-text] Add CanIUse panels

[cvrebert]

Bikeshed has a feature to include CanIUse info panels in specs. (Example; Example commit)

I wonder if the Text Module would consider using this feature? Here are the spec anchors and corresponding CanIUse features for the Text Module:

CSS spec URL(s)	CanIUse feature URL
https://drafts.csswg.org/css-text/#hanging-punctuation-property	https://caniuse.com/#feat=css-hanging-punctuation
https://drafts.csswg.org/css-text/#hyphens-property	https://caniuse.com/#feat=css-hyphens
https://drafts.csswg.org/css-text/#overflow-wrap-property	https://caniuse.com/#feat=wordwrap
https://drafts.csswg.org/css-text/#tab-size-property	https://caniuse.com/#feat=css3-tabsize
https://drafts.csswg.org/css-text/#text-align-last-property	https://caniuse.com/#feat=css-text-align-last
https://drafts.csswg.org/css-text/#text-indent-property	https://caniuse.com/#feat=css-text-indent
https://drafts.csswg.org/css-text/#text-justify-property	https://caniuse.com/#feat=css-text-justify
https://drafts.csswg.org/css-text/#word-break-property	https://caniuse.com/#feat=word-break
https://drafts.csswg.org/css-text-4/#text-spacing-property	https://caniuse.com/#feat=css-text-spacing

9 entries is on the high side, so devs are pretty interested in css-text 😄

[cvrebert]

Fixed for css-text-3 in d0d204e.
Which just leaves text-spacing from css-text-4.