Prepare packages for release

[connorlindsey]

• Port last changes from knock-client-js
• Add changelogs to each package
• Add migration guide link
• Minor fixes to README

Task KNO-4935

[changeset-bot[bot]]

⚠️ No Changeset found

Latest commit: 1a7874e9f45a13d86fc9d0b0ad964ce43519622d

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