Add a filter hook #815

Job	Run time
Core running from build / Core running from build / Linux	2m 1s
Core running from build / Core running from build / Windows	4m 40s
Core running from src / Core running from src / Linux	1m 49s
Core running from src / Core running from src / Windows	3m 12s
Core running from build / Core running from build / MacOS	3m 44s
Core running from src / Core running from src / MacOS	4m 25s
Gutenberg running from build / Gutenberg running from build / Linux	7m 53s
Gutenberg running from src / Gutenberg running from src / Linux	7m 13s
Gutenberg running from build / Gutenberg running from build / Windows	10m 3s
Gutenberg running from src / Gutenberg running from src / Windows	11m 11s
Gutenberg running from build / Gutenberg running from build / MacOS	16m 21s
Gutenberg running from src / Gutenberg running from src / MacOS	18m 15s
Leave WordPress Playground details	2s
Slack Notifications	0s
Failed workflow tasks	0s
	1h 30m 49s

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