[FEATURE] Introduce tool (e.g. Buf or Protolock) for BWC checks and linting

[karenyrx]

Is your feature request related to a problem?

Introduce a protobuf linter/validator to the repo, which can:

• detect breaking changes (e.g. prevent field numbers from being changed)
• enforce protobuf best practices (e.g. avoid large message sizes)
• auto-format proto files
• etc

Planned usage can in a GHA, for PRs with *.proto file changes.

What solution would you like?

Possible OOTB tools include:
https://github.com/bufbuild/buf
https://github.com/nilslice/protolock

What alternatives have you considered?

Welcome to any other alternatives

Do you have any additional context?

N/A

[krisfreedain]

Catch All Triage - 1 2