Add dumpcore flag #9754

Job	Run time
build ucm (ubuntu-20.04)	4m 9s
build ucm (macOS-13)	12m 6s
ormolu	5s
build ucm (windows-2019)	10m 29s
run interpreter tests (ubuntu-20.04)	1m 4s
run transcripts (ubuntu-20.04)	4m 3s
run interpreter tests (macos-13)	2m 15s
generate jit source	6s
run transcripts (macos-13)	9m 23s
run transcripts (windows-2019)	7m 52s
build jit binary / build jit binary (ubuntu-20.04)	7s
build jit binary / build jit binary (macOS-13)	19s
build jit binary / build jit binary (windows-2019)	19s
test jit / test jit (ubuntu-20.04)	8s
test jit / test jit (macOS-13)	12s
	52m 37s

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