Implement Worker to Retrieve Results from Chain

[Atralupus]

We need a worker to communicate with the chain, verify if a tx has been successfully processed, and retrieve the result.
We need to decide whether to use a Renderer or fetch the result via a simple GQL request.

[Atralupus]

This worker will also handle tasks like ranking calculations and determining available opponents for attacks. To manage these various tasks efficiently, we’ll likely need a queue service.
#16 (reply in thread)