Consider using a consolidated/shared proto implementation

[dyladan]

• Must support field presence (proto3 feature)

Possible packages for consideration

• https://github.com/open-telemetry/opentelemetry-proto/blob/main/Makefile
• https://github.com/protobufjs/protobuf.js/blob/master/cli/README.md#pbts-for-typescript
• https://github.com/stephenh/ts-proto

Ideally there will be a package like @opentelemetry/proto which handles all proto serialization tasks for the protobuf and grpc exporters.

[github-actions]

This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 14 days.

[github-actions]

This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 14 days.

[legendecas]

Closing as the package otlp-transformer has been landed.