This PR introduces substrate service, which is built on top of blockchain-service. It is much less useful than ethereum-service, because we need to deal with different runtimes (which means different calls encoding, different transactions encoding, ...) here. So most of code will still reside in substrate binary (which, I hope, will be easy-configurable for using in different chains, though).
(last major, pre-binary) part of #4
This PR introduces substrate service, which is built on top of blockchain-service. It is much less useful than ethereum-service, because we need to deal with different runtimes (which means different calls encoding, different transactions encoding, ...) here. So most of code will still reside in substrate binary (which, I hope, will be easy-configurable for using in different chains, though).