Trappist node refactor (#206)

* WIP

* WIP

* adding service_stout with repeated code

* Compiling: new_partial with generics

* start_generic_node_impl accepts a closure and RPC types are extracted@

* start_generic_2_aura_node seems to be working

* compiling :)

* Adding dex pallet to stout

* a simplified working version

* removing unwanted dir

* Fixing docs

* updating gitignore

* Fixing docker and github actions files

* fmt

* Adding missing polkadot-cli in benchmark feature