Add walltime support for vitest plugin #531

Job	Run time
check	1m 24s
List examples	4s
with-typescript-simple-esm on Node 18	2m 45s
with-typescript-simple-esm on Node 20.5.1	3m 9s
with-javascript-esm on Node 18	1m 48s
with-typescript-esm on Node 18	2m 16s
with-typescript-simple-cjs on Node 18	3m 55s
with-javascript-esm on Node 20.5.1	2m 54s
with-typescript-esm on Node 20.5.1	3m 7s
with-typescript-cjs on Node 20.5.1	4m 26s
with-typescript-simple-cjs on Node 20.5.1	2m 0s
with-typescript-cjs on Node 18	3m 15s
	31m 3s

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