Display errors from Electron when we run cypress run

[dhoko]

I found this issue while updating my lib, if there is a JS error it fails but without any logs.
I was able to find it via the flag --headed + devtools.

It would be great to log this error inside the report we can see inside the output from $ cypress run. Maybe there is a flag, but I didn't find one :/

Current behavior:

≃ it doesn't work cf https://circleci.com/gh/ProtonMail/pt-formgenerator/47?utm_campaign=vcs-integration-link&utm_medium=referral&utm_source=github-build-link

Desired behavior:

It doesn't work, look we found a JS error inside your tests:
ex:

AbortController is undefined

Steps to reproduce: (app code and test code)

Add a test with ex Fetch + AbortController, it won't work because Electron 59 doesn't support it.

Versions

Cypress 3.2.0

[jennifer-shehane]

Duplicate of #700