TFECO-9502: chore: update protobuf definitions to include actions rpcs and messages (#513)

* chore: update protobuf definitions to include actions rpcs and messages

* fix: LinkedAttribute type should be singular

* Apply suggestions from code review

Co-authored-by: Selena Goods <[email protected]>

* update actions protocol to latest revision

* quick re-sync with protocol proposal

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Co-authored-by: Selena Goods <[email protected]>
Co-authored-by: Austin Valle <[email protected]>

Author: 3 people