## What changed?
Adds `buf format` as a Makefile target; and integrates it into `make
fmt`.
All `.proto` changes are from running `make fmt`.
## Why?
Consistent protobuf file style.
## How did you test it?
- [x] built
- [ ] run locally and tested manually
- [ ] covered by existing tests
- [ ] added new unit test(s)
- [ ] added new functional test(s)
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