Add dev config file

[joske]

💥 Proposal

The idea is to add a feature to allow more easily passing dev parameters to the node. Instead of adding a bunch of command line arguments, we'd only have one argument with a config file. So you can add dev parameters by adding fields to a Rust struct and pass that struct around to where it's needed. This brings the benefit of not having to change the method signature anymore if you want to add (or remove) parameters.