spinners: fix spinner color issues

[benjamincburns]

• replace the spinnies dependency with a truffle-maintained fork (@trufflesuite/spinnies)
• removes workaround for Bug: Process doesn't exit when remove is called on an active spinner jbcarpanelli/spinnies#34 (fixed by Truffle improvements spinnies#1)
• implements warn feature on @truffle/spinners
• changes spinner text color back to terminal default

[benjamincburns]

Before this can be brought out of draft status, I need to:

• Get Truffle improvements spinnies#1 approved and merged
• Needs a code review ideally, though that doesn't necessarily need to block this
• Release & publish the @trufflesuite/spinnies package
• I don't believe that I have the necessary rights in the trufflesuite NPM org to do this
• Update packages/spinners/package.json to use the properly released @trufflesuite/spinnies package

Now that I've had a green build, I'll preemptively push the updated package.json file. Unfortunately this will cause the build to go red until the package mentioned above is published.

[haltman-at]

Mostly makes sense to me. Only one line I don't quite understand.

[haltman-at]

Oh, interesting, actually changing this in the PR itself... we haven't typically done this, but it might be a good idea for us to start!

[haltman-at]

Sorry, as someone not familiar with all the spinner changes, what's the significance of this change?

[benjamincburns]

The line that was removed was a workaround for a known issue in the official spinnies module. I fixed that issue in our fork, and removed the workaround.

[benjamincburns]

Bug in question was: jbcarpanelli/spinnies#34

[haltman-at]

OK, thanks!