Add parallel row copy with support for consistent checkpoints (no gaps) #1591

Job	Run time
docker-tests (mariadb:11.4.12)	5m 50s
docker-tests (mariadb:11.8.8)	5m 42s
docker-tests (mariadb:10.5.29)	5m 47s
docker-tests (mariadb:10.6.27)	5m 57s
docker-tests (mysql:5.7.41)	6m 28s
docker-tests (mariadb:10.11.18)	5m 46s
docker-tests (mysql:8.4.3)	6m 41s
docker-tests (percona/percona-server:8.0.41-32)	6m 8s
docker-tests (mysql:8.0.41)	6m 14s
	54m 33s

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