docs: add license and change docs

[fivenp]

Pull request description

change some readme structure add license change contribution guides

Checklist (choose what happened)

• [ ] breaking change! (describe)
• [x] tested locally
• [x] updated the docs
• [ ] added a test

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Name	Status	Preview	Updated
contribute-design	✅ Ready (Inspect)	Visit Preview	Nov 25, 2022 at 9:38PM (UTC)