feat: introduce chain-listener [fixes NET-694 NET-673 NET-674 NET-677 NET-685]

[justprosh]

Description

Subscribe to ComputeCapacityActivated events and store them on disk (for now). + subscribe to newHeads

Motivation

Preparation for RXD integration.

Checklist

• The code follows the project's coding conventions and style guidelines.
• All tests related to the changes have passed successfully.
• Documentation has been updated to reflect the changes (if applicable).
• All new and existing unit tests have passed.
• I have self-reviewed my code and ensured its quality.
• I have added/updated necessary comments to aid understanding.

Reviewer Checklist

• Code has been reviewed for quality and adherence to guidelines.
• Tests have been reviewed and are sufficient to validate the changes.
• Documentation has been reviewed and is up to date.
• Any questions or concerns have been addressed.

[linear]

NET-674 Mimic communication with RXD: write incoming events to file

NET-677 Subscribe to Capacity Commitment events on Nox start

NET-685 Listen for CU-CC activation

NET-694 Listen newHeads event

NET-673 Listen to Chain events via websockets on Nox