[eject] Added no-install and npm args to eject

[EvanBacon]

• Added --no-install flag to expo eject which can be used to skip node module installation and cocoapods installation. This follows the same pattern we use for initializing a bare workflow project.
• Added --npm flag to expo eject which shares the same logic as init for using npm to install modules.
• Added "Cleaning JavaScript dependencies" spinner because the step takes ~5 seconds on my fast computer. Also when the yarn logs are enabled it looks off to see "installing deps.." for a few seconds before you start seeing the logs.
• Added back support for showing the installation logs with EXPO_DEBUG=true
• Fix cocoapods logs only showing with EXPO_DEBUG=false
• Make spinners automatically unmount from the logs module.
• Make spinners support newLineIfNone.
• Unify the node module installation step across init and eject -- adds support for yarn v2 to eject I guess.