refactor(eth-gear): Experiment with using Actix actors instead of raw channels

[playX18]

File Location(s)

relayer/src/message_relayers/eth_gear

Proposal

Instead of passing around large amount of unbounded/bounded/broadcast channels attempt to switch to Actix actors and use proper message-passing style.

Potential benefits:

• More maintenable code
• Less space for bugs in the code
• Easier time handling errors across actors
• Easier time on managing state of the relayer

Right now only eth-gear relayer is being worked on as part of this experiment. If the resulting refactor will improve code quality other relayers might be considered for refactoring too.