[utils] Add gRPC server bootstrapping packages [serve, connection, and retry]

[dean-amar]

Type of change

• Improvement (improvement to code)

Description

• Introduce the gRPC server-bootstrapping chain - serve -> connection -> retry.
  In addition, importing the generic channel utility and shared test helpers, used in the mentioned packages above, from fabric-x-committer.

• Hosting them in fabric-x-common lets fabric-x-committer, fabric-x-evm, and
  future components share a single implementation instead of duplicating it or relying on fabric-x-committer across repos.

Packages added:

• utils/retry - backoff/retry.
• utils/connection - gRPC client dialing, endpoints, TLS config, health checks.
• utils/serve - gRPC/HTTP server lifecycle, interceptors, TLS provider
• utils/channel - generic channel + readiness primitives (Ready latch, buffered reader/writer)

Related issues

• Partially resolves Discussion: publish utils/serve to fabric-x-common fabric-x-committer#675

[coveralls]

coverage: 83.078% (+0.6%) from 82.479% — dean-amar:move-serve-connection-retry into hyperledger:main

[arner]

Hi @dean-amar , are you still planning to continue this?

@tock-ibm this is what @cendhu mentioned in the call today. Even if you don't want to use the shared package for GRPC, it's good for inspiration ;)

[dean-amar]

Hi @dean-amar , are you still planning to continue this?

@tock-ibm this is what @cendhu mentioned in the call today. Even if you don't want to use the shared package for GRPC, it's good for inspiration ;)

Hey @arner, this work item is still planned.

Some important features are still being added to these packages. As mentioned above, the migration will be delayed slightly until everything is fully covered and ready to be moved into the common repository.