Extract Unicode dump into separate workflow. Add manual CodeQL workflow #359

Job	Run time
danger-check	27s
dump-unicode-data / generate-dump	5s
reviewdog	2m 37s
check-pr / check-style	3m 44s
check-pr / check-linux / check	6m 44s
check-pr / check-macos / check	15m 50s
check-pr / check-windows / check	11m 34s
	41m 1s

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