TODO: Use Multisend Contract

[bh2smith]

This repo has a similar batch caller, but with presumably more efficient call data

https://github.com/azf20/seven-seven-zero-two/blob/main/packages/foundry/contracts/Batcher.sol

This would be cool to implement, although I guess it means the UX will be a bit more cumbersome.

We will need to include packages for encoding multisend call data.

Luckily, this can be found here:

https://github.com/BitteProtocol/near-safe/blob/main/src/lib/multisend.ts

[bh2smith]

Closed by #4