Add metrics related to virtual threads #6993

Job	Run time
shellcheck	3m 8s
copyright	3m 26s
checkstyle	3m 49s
build	5m 58s
tests/tck-cdi	17m 22s
javadoc (core)	7m 6s
tests/tck-rest	14m 49s
javadoc (integrations)	5m 17s
spotbugs/core	10m 58s
tests/tck-others	16m 55s
tests/core	11m 25s
spotbugs/integrations	7m 16s
javadoc (others)	7m 50s
tests/it	14m 51s
spotbugs/others	12m 38s
tests/dbclient	8m 50s
archetypes/r1-jar	6m 51s
docs	4m 58s
tests/dbclient-oracle	16m 40s
archetypes/r2-jar	7m 4s
examples/linux	13m 41s
tests/others	12m 38s
archetypes/r3-jar	6m 2s
examples/macos	8m 55s
archetypes/legacy	4m 40s
archetypes/r4-jar	7m 8s
tests/packaging-jar-linux	7m 9s
archetypes/r5-jar	5m 27s
quickstarts/linux	8m 46s
tests/packaging-jlink-linux	8m 58s
quickstarts/macos	9m 11s
tests/packaging-jar-macos	5m 34s
tests/packaging-jlink-macos	6m 46s
tests/native-image-mp-1-linux	6m 34s
tests/native-image-mp-2-linux	6m 52s
tests/native-image-mp-3-linux	6m 28s
tests/native-image-se-1-linux	6m 51s
tests/native-image-inject-linux	6m 32s
tests/native-image-mp-1-macos	6m 52s
tests/native-image-mp-2-macos	7m 0s
tests/native-image-mp-3-macos	7m 7s
tests/native-image-se-1-macos	6m 50s
tests/native-image-inject-macos	6m 52s
tests/results	0s
gate	0s
	6h 0m 4s

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