Backend: Initialize Deed Consumer Contract

[Robert-H-Leonard]

The DeedConsumer contract is what the contract the web app will interact with. This issue is scoped to defining the interface we need to implement for this contract. This contract should:

1. Have a function where a street address can be passed in and it first checks if it already has that addresses data. If not it calls the Oracle contract to fetch deed data. (Response from oracle contract will contain the ipfs hash)

2. Have events around data being saved/updated

Acceptance criteria

• Hardhat or remix configured
• Interface for the Deed Consumer contract
• Make sure Oracle contract is also saved in github repository