ci: run engine tests in their own job and drop the per-child test-host relaunch - #7364

ci: run engine tests in their own job and drop the per-child test-host relaunch#7364

thomhurst merged 3 commits into

mainthomhurst/TUnit:mainfrom

issue-7359-engine-tests-speedthomhurst/TUnit:issue-7359-engine-tests-speedCopy head branch name to clipboard