Fix workspace and replace compile_protos with regenerate-files

Merge pull request #13 from openconfig/hines

fix pb.go generation and move to standard regenerate-files.sh

Implement undrain functionality in gNPSI service.

PiperOrigin-RevId: 636871959

Adding stats collection

This changelist adds methods to record essential stats for each gRPC connection and expose them.

PiperOrigin-RevId: 615700708

Merge pull request #2 from openconfig/hines

Fix invalid sha in deps