Error list truncated for erroneous builds

Created by: tSchubes

Only the first error of an erroneous build is output to the console leaving the developer without all of the relevant details required to troubleshoot. Additional errors are intentionally truncated here:

https://github.com/facebook/create-react-app/blob/a4fa63fcc1fb97fa50778b7c1a73a01da3a3e022/packages/react-scripts/scripts/build.js#L191-L195

Second and subsequent errors are most certainly not "noise". They provide vital insight in to the cause of problems and save developers from chasing their tails trying to troubleshoot failures with limited detail.

PR incoming.