Enhancing worker loops

[Wolk1618]

For the moment, the bot is composed of 3 workers that execute routinely :

• Fetch Discord members
• Fetch Starknet IDs
• Apply Rules

For big servers, we cannot afford to spend so much time on each loop instance.
It is necessary to rethink the parallelisation of the execution to be more efficient.
We need to parallelise everything : the rule application by server, the scan of the server and the fetch of starknet ID.