chore: migrate prettier & ESlint to Biome

[RobbyUitbeijerse]

This PR requires some work, but I highly recommend considering the implications beforehand - I'm happy to bring it over the finish line if you're interested.

In my last few projects I've been using @biomejs/biome as a replacement for both Prettier as well as ESLint. It's a single and a lot faster than Prettier/ESLint.

There are noteworthy (web3 related) projects using @biomejs/biome already, like viem & wagmi.

If you're interested, there are a few steps to take. Mainly:

1. Running the formatter & lint scripts over the whole codebase
2. Adjusting the leftover cases that can't be automatically fixed

As this results in a ton of changes, discussing the changes in this PR first before actually running the format/lint scripts made most sense to me. Let me know what you think.

[CLAassistant]

All committers have signed the CLA.