Update api-documenter to work with new devsite changes

[hsubox76]

Devsite has had some changes and requires some different headers and tags for our reference docs as demonstrated in this CL (internal): https://critique.corp.google.com/cl/461499214

Updating api-documenter to provide this for us, Admin, and Functions. When it is approved, I will publish it to NPM so that Admin and Functions can consume the updates. The update will require an additional command line argument, --project, which will determine the path string pointing at the _project.yaml file.

Also updated JS SDK internal docgen script to call the api-documenter with --project js, plus insert the "do not edit" message in the right place given the new changes.

[changeset-bot]

⚠️ No Changeset found

Latest commit: d027c27

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[google-oss-bot]

Size Report ¹

Affected Products

No changes between base commit (1703bb3) and merge commit (4a021bd).

Test Logs

• Base (1703bb3): https://github.com/firebase/firebase-js-sdk/actions/runs/2699298446
• Merge (4a021bd): https://github.com/firebase/firebase-js-sdk/actions/runs/2699705860

1. https://storage.googleapis.com/firebase-sdk-metric-reports/Of53Kj4hIT.html

[google-oss-bot]

Size Analysis Report ¹

Affected Products

No changes between base commit (1703bb3) and merge commit (9acad85).

Test Logs

• Base (1703bb3): https://github.com/firebase/firebase-js-sdk/actions/runs/2699298446
• Merge (9acad85): https://github.com/firebase/firebase-js-sdk/actions/runs/2699727638

1. https://storage.googleapis.com/firebase-sdk-metric-reports/bBwtNuUDfE.html

[dwyfrequency]

LGTM

[taeold]

Tested the change for functions SDK - works great! Thank you.