[Core] Fix named imports across the entire codebase

[Olshansk]

Objective

Follow best Golang practices w.r.t named imports

Origin Document

Goals

• Follow best practices in Go
• Stay consistent w.r.t imports throughout the codebase

Deliverable

• [ ] Identify and update all named imports in Go that are CamelCase and change them to snake_case

Non-goals / Non-deliverables

• Any business logic changes

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: @Olshansk