* feat: new app provider w/ fallback behavior

* progress

* update useContractX signer params

* Revert "update useContractX signer params"

This reverts commit 386d1580dff77338810a4b31be38efd039d4b138.

* extend jsonrpcprovider

* add mainnet quicknode example, use old staticJsonRpc extension

* add tests

* unit testing

* fixes to tests/tsc

* Update src/state/routing/gas.ts
Co-authored-by: Zach Pomerantz <zzmp@uniswap.org>

* pr review

* e2e tests should only talk to the chain via connected wallet

* Revert "e2e tests should only talk to the chain via connected wallet"

This reverts commit 0ce76eb7e4132917a52b49531db871a189448e51.

* add charlie's null nit

* fix e2e

* add feature flag

* Update cypress/support/setupTests.ts
Co-authored-by: Zach Pomerantz <zzmp@uniswap.org>

* pr review

* pr feedback

* fix tests

* add generic send test

* fix merge error

* add a failure rate calculation and inline comments on scoring algo w/ an example

* fix sort test

* cleaner provider creation

* simplify sort

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