Improve code_search output formatting #6419

Job	Run time
build-and-check	3m 14s
test-integration-packages/internal	1m 3s
test-integration-packages/billing	1m 10s
test-integration-sdk	1m 21s
test-integration-web	45s
test-integration-common	58s
test-integration-cli	51s
test-packages/agent-runtime	59s
test-web	1m 16s
test-packages/billing	48s
test-sdk	50s
test-packages/internal	50s
test-integration-packages/agent-runtime	47s
test-cli	52s
test-.agents	49s
test-common	53s
	17m 26s

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