docs: add example showing ipip-484 client filtering #277

Job	Run time
js-test-and-release / check	1m 50s
js-test-and-release / test-chrome-webworker	3s
js-test-and-release / test-chrome	3s
js-test-and-release / test-electron-main	2s
js-test-and-release / test-electron-renderer	3s
js-test-and-release / test-firefox	4s
js-test-and-release / test-firefox-webworker	1s
js-test-and-release / test-node (windows-latest, lts/*)	1s
js-test-and-release / test-webkit (ubuntu-latest, lts/*)	2s
js-test-and-release / test-node (ubuntu-latest, lts/*)	1s
js-test-and-release / test-webkit (macos-latest, lts/*)	1s
js-test-and-release / test-node (macos-latest, lts/*)	3s
js-test-and-release / test-webkit-webworker (ubuntu-latest, lts/*)	1s
js-test-and-release / test-webkit-webworker (macos-latest, lts/*)	3s
js-test-and-release / release-check	1s
js-test-and-release / release	1s
	2m 20s

Provide feedback