Async IF tx pool

[emhane]

Describe the feature

Issues arising form the fact that commits to the transactions pool are synchronous (https://github.com/paradigmxyz/reth/issues/6411, https://github.com/paradigmxyz/reth/issues/6289, ...), should eventually be obsolete by reworking the transactions pool interface to be asynchronous. The tx pool should run as a service listening for commands, and be spawned in its own thread.

Additional context

No response