API Standardise extension hooks #994

Job	Run time
CI / Generate matrix	50s
CI / Context	1s
CI / 8.1 prf-low mysql57 phpunit all	2m 31s
CI / Check governance	0s
CI / 8.2 mariadb phpunit all	3m 8s
CI / 8.3 mysql80 phpunit all	3m 44s
CI / 8.1 mysql57 phplinting	2m 12s
CI / 8.1 mysql57 endtoend root job1	19m 13s
CI / 8.3 mysql80 endtoend root job1	19m 52s
CI / 8.1 mysql57 endtoend root job2	12m 58s
CI / 8.3 mysql80 endtoend root job2	13m 27s
CI / 8.1 mysql57 endtoend root job3	15m 41s
CI / 8.3 mysql80 endtoend root job3	15m 20s
CI / 8.1 mysql57 endtoend root job4	21m 8s
CI / 8.3 mysql80 endtoend root job4	20m 25s
CI / 8.1 mysql57 endtoend root job5	11m 32s
CI / 8.3 mysql80 endtoend root job5	11m 46s
CI / 8.1 mysql57 endtoend root job6	19m 59s
CI / 8.3 mysql80 endtoend root job6	20m 5s
CI / 8.1 mysql57 endtoend root job7	30m 54s
CI / 8.3 mysql80 endtoend root job7	30m 8s
CI / 8.1 mysql57 js	4m 20s
CI / 8.1 mysql57 doclinting	2m 33s
CI / Dispatch tag patch release	0s
	4h 41m 47s

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