eth

As per: https://www.npmjs.com/package/hardhat-interface-generator
This package takes an specified contract and generates an Interface contract automatically.

Add the package and create a yarn command for convenience.

Describe the bug
See the issue title.
I've only witnessed this at [the hackathon list page](https://gitcoin.co/

It is unclear how to use something like get_token_balance() with respect to the Uniswap v2 factory contract. I am trying to view the amount of a token in the Uniswap v2 liquidity pool, and it seems all I can check is the ERC20 token balance globally.

Edit: I see now I can use get_ex_token_balance(), but I am receiving the Uniswap v1 pool amounts. When I switch to version 2 the Factory methods

Thinking to just have it dump the raw wallet files to a file would be useful, especially for some older wallet types.