Integrate EPM (Ethereum Package Manager) into Contracts dapp

[hiddentao]

Idea: Integrate EPM (Ethereum Package Manager) into Contracts dapp
Author: Your name <youremail@domain.com>

Overview

The contracts Dapp could make use of EPM lockfiles to better facilitate contract interaction.

## Details

We want to reduce and ideally avoid user error when interacting with contracts (in terms of address, ABI, etc), we want to automate contract resolution (e.g. figuring out the ABI) and we want to give the user some confidence in what they're doing.

EPM lockfiles will help with all of this.