feat(ansible): add pgBackRest tasks and configurations #4301

Job	Run time
build-run-image (macos-latest-xlarge, arm64)	3m 34s
build-run-image (blacksmith-32vcpu-ubuntu-2404, amd64)	2m 15s
build-run-image (blacksmith-32vcpu-ubuntu-2404-arm, arm64)	3m 11s
run-testinfra / prepare	38s
run-tests / prepare	35s
run-tests / build ("15")	2m 55s
run-tests / build ("17")	1m 54s
run-tests / build ("orioledb-17")	1m 51s
run-testinfra / test-ami-nix ("orioledb-17")	49m 46s
run-testinfra / test-ami-nix ("15")	36m 47s
run-testinfra / test-ami-nix ("17")	34m 8s
build-run-image (blacksmith-32vcpu-ubuntu-2404-arm, arm64)	3m 11s
build-run-image (macos-latest-xlarge, arm64)	3m 34s
run-testinfra / prepare	38s
run-testinfra / test-ami-nix ("orioledb-17")	34m 51s
run-testinfra / test-ami-nix ("15")	36m 52s
run-testinfra / test-ami-nix ("17")	35m 0s
run-tests / prepare	35s
run-tests / build ("15")	2m 55s
run-tests / build ("17")	1m 54s
run-tests / build ("orioledb-17")	1m 51s
build-run-image (blacksmith-32vcpu-ubuntu-2404, amd64)	2m 15s
	4h 21m 10s

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