feat: delete entire project via push command

[vigneshshanmugam]

• fix add support to delete the entire project with push #581
• users would be promoted with a dialog when pushing with empty monitors which then clicking Yes would nuke the entire project in Kibana.
• Also fixed a bug where we kept pushing even on auth errors, now we immediately exit when we find errors during pushing.

[apmmachine]

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• Start Time: 2022-09-19T16:53:49.330+0000

• Duration: 14 min 29 sec

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Test	Results
Failed	0
Passed	187
Skipped	2
Total	189

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[andrewvc]

We really need a --yes flag here I think

[andrewvc]

I think we should add a --yes flag to skip this in case someone wants to automate it for any reasons.

I did try running with yes | npx @elastic/synthetics push but our command really dislikes that and tries to process all the input thus stalling.

[vigneshshanmugam]

I will address this separately and open a PR. #601

[andrewvc]

LGTM, I'm OK with --yes coming in a future PR