Make usage banner clickable to go to /usage page #5252

Job	Run time
build-and-check	2m 39s
test-integration-packages/billing	47s
test-integration-cli	39s
test-web	43s
test-integration-packages/agent-runtime	41s
test-sdk	48s
test-.agents	47s
test-cli	1m 35s
test-packages/billing	42s
test-integration-sdk	51s
test-packages/internal	39s
test-integration-web	40s
test-integration-packages/internal	42s
test-integration-.agents	1m 24s
test-integration-common	39s
test-packages/agent-runtime	3m 2s
test-common	55s
	18m 13s

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