Documentation: cli/rpc release steps

[sreuland]

What problem does your feature solve?

platfrom release process docs don't include soroban steps yet.

What would you like to see?

update our Platform Dev Release Process to capture formalized release steps related to cli publishing and rpc pkg/image publishing and updating hosted deployments.

• RPC release steps related to k8s deployment, should capture the need to deploy to dev namespaces first for sanity check/verify release image:
  soroban-rpc-futurenet-dev
soroban-rpc-testnet-dev
  then deploy to public deployments, i.e. prd namespaces
  soroban-rpc-futurenet-prd
soroban-rpc-testnet-prd

use content already captured for futurenet process as starting point.

What alternatives are there?

[sreuland]

initially put this in Stable milestone b/c these formalized docs can be used for ensuing cli/rpc release processes, for testnet interim update deployments and pubnet deployment, rather than referring to and translating from futurenet docs for release or deployent steps.

[tsachiherman]

@sreuland I believe that I've updated the document as requested. Could you please confirm and close this ticket ?
( we don't have a review feedback for issues.. )

[sreuland]

@tsachiherman , updates look good, thanks!