[FEATURE] - Swarm configuration should be user configurable

[moofone]

Feature Description

Currently, bootstrap_with_identity() makes decisions about default configuration which is not always useful. There should exist a way to create the swarm in a more flexible way passing in various configuration overrides.

Motivation

For example to set timeouts, larger payloads, different protocols, etc.

Proposed Solution

To resolve this issue I propose first doing the absolute minimum which is adding bootstrap_with_config(). Then other issues can be raised for custom Actor/Swarm Event interactions, For example we should allow the Actor to interact with DHT Events (I have a use case for this, which requires maintaining a fork), and/or possibly adding another protocol/behaviour.