Add parallel row copy with support for consistent checkpoints (no gaps) #1590

Job	Run time
docker-tests (mariadb:10.11.18)	6m 5s
docker-tests (mariadb:11.4.12)	4m 56s
docker-tests (mysql:8.0.41)	6m 7s
docker-tests (mariadb:10.6.27)	5m 41s
docker-tests (percona/percona-server:8.0.41-32)	6m 1s
docker-tests (mysql:8.4.3)	7m 25s
docker-tests (mariadb:10.5.29)	5m 41s
docker-tests (mariadb:11.8.8)	4m 35s
docker-tests (mysql:5.7.41)	6m 34s
	53m 5s

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