devel/py-opentelemetry-exporter-otlp-proto-common: Add py-opentelemetry-exporter-otlp-proto-common 1.27.0
OpenTelemetry Protobuf Encoding is provided as a convenience to encode to
Protobuf. Currently used by:
- opentelemetry-exporter-otlp-proto-grpc
- opentelemetry-exporter-otlp-proto-http