[#628] Add compression connector #2979

Job	Run time
ci / check if job needs to run	4s
ci / prepare test matrix	10s
ci / MOODLE_310_STABLE - pgsql - php 7.2 - tool_dataflows	4m 51s
ci / MOODLE_35_STABLE - mariadb - php 7.1 - tool_dataflows	8m 4s
ci / MOODLE_35_STABLE - pgsql - php 7.1 - tool_dataflows	4m 19s
ci / MOODLE_311_STABLE - mariadb - php 7.3 - tool_dataflows	8m 26s
ci / MOODLE_35_STABLE - mariadb - php 7.2 - tool_dataflows	5m 17s
ci / MOODLE_35_STABLE - pgsql - php 7.2 - tool_dataflows	3m 27s
ci / MOODLE_36_STABLE - mariadb - php 7.1 - tool_dataflows	6m 30s
ci / MOODLE_37_STABLE - pgsql - php 7.2 - tool_dataflows	4m 50s
ci / MOODLE_38_STABLE - mariadb - php 7.3 - tool_dataflows	5m 29s
ci / MOODLE_39_STABLE - mariadb - php 7.2 - tool_dataflows	7m 20s
ci / MOODLE_39_STABLE - pgsql - php 7.2 - tool_dataflows	4m 17s
ci / MOODLE_39_STABLE - mariadb - php 7.3 - tool_dataflows	5m 31s
ci / MOODLE_39_STABLE - pgsql - php 7.3 - tool_dataflows	4m 13s
ci / MOODLE_400_STABLE - pgsql - php 7.3 - tool_dataflows	5m 51s
ci / MOODLE_401_STABLE - mariadb - php 7.4 - tool_dataflows	8m 8s
ci / MOODLE_401_STABLE - pgsql - php 7.4 - tool_dataflows	4m 40s
ci / MOODLE_401_STABLE - mariadb - php 8.0 - tool_dataflows	7m 54s
ci / MOODLE_401_STABLE - pgsql - php 8.0 - tool_dataflows	4m 43s
ci / Release to the Moodle plugin directory	0s
	1h 44m 4s

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