Once you have your project set up, the folder tree should look something like this:
web3api.yaml is a manifest file describing the layout of a Polywrap wrapper.
src/query folders are where the API's GraphQL schema and AssemblyScript implementation files live.
src/contracts directory contains our protocol's Ethereum-based smart contracts.
We'll be using this functionality further down in this guide with the
w3 query command, allowing us to easily send test queries against our API.
In the next section, we'll build this example template and see what gets outputted in the build folder!