feat: add server timing to responses #478

Job	Run time
js-test-and-release / check	2m 9s
js-test-and-release / test-chrome-webworker	52s
js-test-and-release / test-node (windows-latest, lts/*)	3m 52s
js-test-and-release / test-node (ubuntu-latest, lts/*)	45s
js-test-and-release / test-chrome	58s
js-test-and-release / test-firefox	45s
js-test-and-release / test-node (macos-latest, lts/*)	2m 23s
js-test-and-release / test-electron-main	48s
js-test-and-release / test-firefox-webworker	45s
js-test-and-release / test-webkit (ubuntu-latest, lts/*)	1m 3s
js-test-and-release / test-webkit (macos-latest, lts/*)	2m 19s
js-test-and-release / test-webkit-webworker (ubuntu-latest, lts/*)	1m 0s
js-test-and-release / test-electron-renderer	26s
js-test-and-release / test-webkit-webworker (macos-latest, lts/*)	2m 16s
js-test-and-release / release-check	0s
js-test-and-release / release	0s
	20m 21s

Provide feedback