Set up functions kits packages for publishing

[inlined]

Put all packages in a new @firebase-function-kits namespace and resets the version number to 0.0.0, which means the first canary will be 0.0.1-rc.0

[wiz-9635d3485b]

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[gemini-code-assist]

Code Review

This pull request resets the version numbers to 0.0.0, adds initial release changelogs, and updates the package names across several Firebase function kits. The review feedback correctly identifies naming inconsistencies and typos in the package scope names: @firebase-fuction-kits contains a typo in the firestore-translate-text package, and @firebase-functions-kits (plural) is used inconsistently in the bigquery-firestore-export and delete-user-data packages instead of the singular @firebase-function-kits.

[ajperel]

Bonus if in this or a future PR you update the READMEs to also point to the correct replacement packages.