ci[minor]: Add GitHub action to check broken links #1145

Job	Run time
Build	1m 34s
Check formatting	1m 23s
check-readmes-synced	3s
Check linting	1m 45s
Unit Tests (ubuntu-latest, 18.x)	1m 9s
Unit Tests (ubuntu-latest, 20.x)	57s
Unit Tests (ubuntu-latest, 22.4.1)	1m 51s
Validate Deno and Node dependencies in sync	5s
Unit Tests (windows-latest, 22.4.1)	3m 3s
validate-new-notebooks	1m 48s
Unit Tests (macos-latest, 22.4.1)	2m 13s
	15m 51s

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