Review new documentation section API

[hugolpz]

• Gather definitions of terms within an API section
• Initiate definitions, default, syntax presentations.
• Review recent changes README.md
• Continue improvements of English version : phrasing, style, etc.
• Translate into local Chinese readme(s).

[sgalal]

Thanks! Please commit to a new branch and create a draft pull request next time.

[hugolpz]

Received for the PR, I'am still unfamiliar with that but need to learn indeed. This past week I pushed oppen-cc.js as much as I could with healthy improvement to the doc. I'am not using open-cc.js myself but it's a central and much required piece of the CN + JS ecosystem, which needs good cares. I plan to move back to other projects now. The sub-tasks 3,4,5 of this issue should be taken over by someone else if you / someone is interested push further. I removed myself from the admins so all is clean. Good luck to the team 🌻 💛