dillon1000/react

Add script to output flag values (#28115)

## Overview

Depends on: https://github.com/facebook/react/pull/28116

Add `yarn flags` to output at table of all feature flags. 

Provides options to output a csv file, diff two or more builds, and
sort.

### Options
<img width="1154" alt="Screenshot 2024-01-26 at 4 06 53 PM"
src="https://github.com/facebook/react/assets/2440089/c3dbd632-adb9-4416-9488-1c603ee4e789">

### `yarn flags --diff next canary`
<img width="637" alt="Screenshot 2024-01-26 at 4 15 03 PM"
src="https://github.com/facebook/react/assets/2440089/1a681ae8-ce33-42d0-9d1f-3f415a8e1c3d">


### `yarn flags --diff canary experimental`
<img width="637" alt="Screenshot 2024-01-26 at 4 14 51 PM"
src="https://github.com/facebook/react/assets/2440089/c66f66cb-3cee-4df6-a1d1-b24600ebd4b3">


### `yarn flags` (all flags)

<img width="1054" alt="Screenshot 2024-01-26 at 4 16 30 PM"
src="https://github.com/facebook/react/assets/2440089/4ce99c7c-825e-4bca-9b83-ca5d6e2bc1a9">