Add update files context ad hoc task and cli script #493

Job	Run time
ci / check if job needs to run	5s
ci / prepare test matrix	10s
ci / MOODLE_310_STABLE - pgsql - php 7.2 - mod_cms	4m 24s
ci / MOODLE_39_STABLE - mariadb - php 7.2 - mod_cms	3m 17s
ci / MOODLE_311_STABLE - mariadb - php 7.3 - mod_cms	3m 54s
ci / MOODLE_39_STABLE - pgsql - php 7.2 - mod_cms	3m 26s
ci / MOODLE_39_STABLE - mariadb - php 7.3 - mod_cms	3m 22s
ci / MOODLE_400_STABLE - pgsql - php 7.3 - mod_cms	3m 35s
ci / MOODLE_39_STABLE - pgsql - php 7.3 - mod_cms	4m 1s
ci / MOODLE_401_STABLE - pgsql - php 7.4 - mod_cms	3m 16s
ci / MOODLE_401_STABLE - mariadb - php 7.4 - mod_cms	3m 3s
ci / MOODLE_401_STABLE - mariadb - php 8.0 - mod_cms	3m 54s
ci / MOODLE_401_STABLE - pgsql - php 8.0 - mod_cms	4m 58s
ci / Release to the Moodle plugin directory	0s
	41m 25s

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