Tests

add $ARGUMENTS placeholder for custom commands #613

Job	Run time
graalvm-build	5m 42s
unit-test (macos-latest, 24)	2m 1s
unit-test (ubuntu-22.04, 24)	39s
jvm-integration-test (ubuntu-22.04, 24)	2m 21s
unit-test (windows-latest, 24)	1m 14s
jvm-integration-test (macos-latest, 24)	4m 43s
nix-build	6m 58s
graalvm-integration-test	1m 2s
	24m 40s

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