Add README for Knowledge Component #3531

Job	Run time
changes	4s
gatekeeper	5s
env	1s
documentation / build	27s
mac / build	5m 3s
windows / build	41s
ubuntu / build	4m 55s
application_tester / run (windows-latest)	5m 36s
application_tester / run (macos-13)	3m 59s
application_tester_draft / run (ubuntu-latest)	3m 37s
coverage_draft / generate and upload	2m 8s
guitest / run (ubuntu-latest)	1m 16s
guitest / run (macos-13)	1m 50s
guitest_draft / run (windows-latest)	2m 6s
pytest / run (windows-latest)	4m 54s
scripttest_draft / run	1m 17s
pytest / run (macos-13)	4m 7s
	42m 6s

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