[Persistence] Adds Save and Load functionality to TreeStore

[dylanlott]

Description

Adds save and load functionality to the TreeStore.

This PR makes the TreeStore an Interruptable module. This is necessary because the Persistence module needs to be able to tell the TreeStore to relinquish its connection to the nodeStores which are backed by BadgerDB.

Issue

Related to #568

Type of change

Please mark the relevant option(s):

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

List of changes

• Adds save and load functionality for loading a worldState from file directories.

Testing

• [x] make develop_test; if any code changes were made
• [x] 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]

@dylanlott Can you "re-request" a review when its ready and I'll reply to all the comments/questions then?

[dylanlott]

@dylanlott Can you "re-request" a review when its ready and I'll reply to all the comments/questions then?

You beat me to it. I just finished up addressing your feedback, it's ready for re-review 👍