[CONSENSUS] Generate asynchronous event channel for state synchronization

[gokutheengineer]

Objective

Currently, state sync events are sent and received using the common event channel. The objective is to create a separate channel for state sync module and consensus module interaction.

Origin Document

Goals

• Separate interaction between state sync events from the main event bus.

Deliverable

• New event bus between state sync and consensus modules.

Non-goals / Non-deliverables

• Change business logic

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

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Creator: @gokutheengineer
Co-Owners: @Olshansk

[Olshansk]

@gokutheengineer Were you think of a different event bus, or just a different channel (i.e. go channel) that's maintained by the bus?