[Mockgen] For all test artifacts that are manually created

[andrewnguyen22]

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Objective

Use mockgen to create mocks in test_artifacts

Origin Document

Currently - test_artifacts under the shared module mocks the genesis and config structures by hand.

IF we can continue to create proper genesis and config files for the debug client we should use mockgen here.

Deliverable

• [ ] Full mockgen implementation
• [ ] Supporting documentation

General issue deliverables

• [ ] Update the appropriate CHANGELOG
• [ ] Update any relevant READMEs (local and/or global)
• [ ] Update any relevant global documentation & references
• [ ] If applicable, update the source code tree explanation
• [ ] If applicable, add or update a state, sequence or flowchart diagram using mermaid

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Creator: @andrewnguyen22 Co-Owners: @Olshansk

[Olshansk]

Superseded by runtime configs.