feat: Add HTTP proxy support for corporate/enterprise users #5975

Job	Run time
build-and-check	3m 5s
test-integration-packages/internal	1m 20s
test-integration-web	50s
test-integration-packages/agent-runtime	48s
test-integration-common	46s
test-integration-cli	52s
test-.agents	42s
test-common	46s
test-cli	1m 0s
test-integration-sdk	1m 23s
test-packages/agent-runtime	51s
test-packages/internal	56s
test-packages/billing	40s
test-web	50s
test-sdk	52s
test-integration-packages/billing	1m 7s
	16m 48s

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