[Persistence] Adds node subcommand to CLI

[dylanlott]

Description

Adds the first step of the CLI harness for save and load E2E testing. This PR is the first of a series and will be followed by additional PRs adding the actual sub-command logic and execution.

node keyword was chosen contrary to #566 as per the Discussion in Discord.

Issue

Relates to a series of changes to address #566

Type of change

Please mark the relevant option(s):

• New feature, functionality or library
• Bug fix
• Code health or cleanup
• Major breaking change
• Documentation
• Other

List of changes

• Adds the node sub-command to the app CLI.

Testing

• make develop_test; if any code changes were made
• make test_e2e on k8s LocalNet; if any code changes were made
• e2e-devnet-test passes tests on DevNet; if any code was changed
• Docker Compose LocalNet; if any major functionality was changed or introduced
• k8s LocalNet; if any infrastructure or configuration changes were made

Required Checklist

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added, or updated, godoc format comments on touched members (see: tip.golang.org/doc/comment)
• I have tested my changes using the available tooling
• I have updated the corresponding CHANGELOG

If Applicable Checklist

• I have updated the corresponding README(s); local and/or global
• I have added tests that prove my fix is effective or that my feature works
• I have added, or updated, mermaid.js diagrams in the corresponding README(s)
• I have added, or updated, documentation and mermaid.js diagrams in shared/docs/* if I updated shared/*README(s)

[Olshansk]

Changes lgtm. Any reason we can't base this against main instead of persistence/savepoints-initial?

[dylanlott]

Changes lgtm. Any reason we can't base this against main instead of persistence/savepoints-initial?

Absolutely none 😄 I had just been on savepoints-initial when I made the PR 👍 I dropped the others and updated the base branch. 🌴

[h5law]

Changes are small looks good to me, unsure on the linter error but once thats figured out/fixed lets