Mg/custom contracts - Githubissues

What's included in this pr + description

Two different features in this PR:

Ability to create custom contract calls. This is a new type of check that lets the user add any sort of transaction and allows the user to create as many transactions as they want, bundled into one.
Ability to execute many transactions at once. This lets the user execute many checks in one go.

Motivation & Context

Increasing the amount of transaction types you can create.
Improving the UX of executing many transactions

Steps to test

Click custom transaction Enter your details Sign Execute Check transaction hash

Screenshots and/or loom video

Notes

The UX (especially around contract creator) are not great, but I don't think it's worth worrying about that too much considering we are going to be moving to a new project soon.

Relevant docs

delegatecall vs call

0xStation / proposer