test

Support `--profile=memory` option #596

Job	Run time
check-misc (head)	12s
test-memory (head)	29s
steep-check (head)	18s
test-ruby (head, master)	6m 10s
test-windows (head)	2m 7s
test-ruby (3.0, master)	6m 0s
ruby-versions / Generate Ruby versions	2s
test-cpp (head, g++)	11s
test-cpp (head, clang++)	20s
test (2.5)	28s
test-c (head, cc)	17s
test (2.6)	26s
test-c (head, gcc)	10s
test (2.7)	26s
test-c (head, clang)	14s
test (3.0)	12s
test (3.1)	15s
test (3.2)	18s
test (3.3)	14s
test (3.4)	12s
test (head)	11s
	19m 12s

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