* refactor: mv settings state to own file

* chore: add default exports

* refactor: update swap state to match biz logic

* feat: copy biz logic to widgets

* Hook up UI to updated swap state

* fix: decimal inputs

* fix max slippage

* fix error in settings

* fix: typing errors

* revert: useBestTrade changes

* fix: use client side trade for widgets

* fix: exhaustive deps

* chore: add router-sdk

* fix: gate old web3 on widget env

* fix building errors

* update trade imports

* update hook naming for swap amount and currencies

* small changes
Co-authored-by: Zach Pomerantz <zzmp@uniswap.org>