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Add `toolcache.ts` script for `bundle(-from)-toolcache` checks #8159

Job	Run time
All-platform bundle (macos-latest-xlarge, nightly-latest)	8m 15s
All-platform bundle (windows-latest, nightly-latest)	9m 9s
All-platform bundle (ubuntu-latest, nightly-latest)	2m 53s
	20m 17s