[Persistence] Implement Local context for persistence module

[adshmh]

Objective

Implement the Local context of persistence module, introduced by #803.

Origin Document

Introduced by #803, as part of work on #754.
Local context is required to complete the servicer functionality.

The interface to be implemented:

The usage of Local context of persistence module in servicer:

and

Goals

• Implement the Local context to the extent required by the servicer.

Deliverable

• Updated Persistence module
• Updated Documentation
• Updated minimal E2E tests to validate the functionality

General issue deliverables

• Update the appropriate CHANGELOG(s)
• Update any relevant local/global README(s)
• Update relevant source code tree explanations
• Add or update any relevant or supporting mermaid diagrams

Testing Methodology

• Task specific tests or benchmarks: make ...
• New tests or benchmarks: make ...
• All tests: make test_all
• LocalNet: verify a LocalNet is still functioning correctly by following the instructions at docs/development/README.md
• k8s LocalNet: verify a k8s LocalNet is still functioning correctly by following the instructions here

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Creator: @adshmh
Co-Owners: [@Olshansk ]

[Olshansk]

@adshmh You should mark yourself as the creator at the bottom of the ticket by referencing your github username.

You can add co-owners if someone else has context into the work. @Olshansk for this specific one.

Also, please update the iteration (if you plan on doing this now or in a future iteration) and change to Backlog or up next appropriately.

[Olshansk]

@adshmh For tickets like this, to avoid spending too much time on the context in the origin document (which would be nice but I know is overkill), feel free to just insert a screenshot from a different PR or discussion we had.

[adshmh]

@adshmh For tickets like this, to avoid spending too much time on the context in the origin document (which would be nice but I know is overkill), feel free to just insert a screenshot from a different PR or discussion we had.

Done, thank you for the hint.

[h5law]

@adshmh is the local context going to be a postgres instance or a badger db?

[Olshansk]

@adshmh is the local context going to be a postgres instance or a badger db?

@adshmh Friendly bump on this.

[adshmh]

@adshmh is the local context going to be a postgres instance or a badger db?

@adshmh Friendly bump on this.

Thank you for the reminder.
I think it is going to be using SMST backed by the kvstore.