Add Liquid IL benchmark (#525) #1985

Job	Run time
benchmark-graph	35s
benchmark-ractor (head)	7m 14s
benchmark-run-once	1m 37s
benchmark-ractor-only (head)	47s
benchmark-default (head)	12m 46s
benchmark-default (ruby)	12m 12s
test (head)	41s
benchmark-default (truffleruby, --excludes=knucleotide,lobsters,ruby-lsp,shipit)	13m 52s
test (truffleruby)	1m 42s
test (ruby)	51s
all-tests	4s
	52m 21s

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