[1/4] Add ppl protos and setup dependencies

[wu-hui]

No description provided.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 085e6f2

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[MarkDuckworth]

LGTM

[google-oss-bot]

Size Report ¹

Affected Products

• @firebase/firestore

  Type	Base (d34d930)	Merge (9c428d0)	Diff
  main	634 kB	634 kB	+202 B (+0.0%)

• @firebase/firestore-pipelines

  Type	Base (d34d930)	Merge (9c428d0)	Diff
  main	630 kB	630 kB	+202 B (+0.0%)

Test Logs

• Base (d34d930): https://github.com/firebase/firebase-js-sdk/actions/runs/18411247698
• Merge (9c428d0): https://github.com/firebase/firebase-js-sdk/actions/runs/18500720290

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

[google-oss-bot]

Size Analysis Report ¹

Affected Products

No changes between base commit (d34d930) and merge commit (9c428d0).

Test Logs

• Base (d34d930): https://github.com/firebase/firebase-js-sdk/actions/runs/18411247698
• Merge (9c428d0): https://github.com/firebase/firebase-js-sdk/actions/runs/18500720290

1. https://storage.googleapis.com/firebase-sdk-metric-reports/RITv4cKKDE.html