Add sglang router minimal support #5729

Job	Run time
compute-version	3s
build-docs	-1s
build-artifacts / frontend-build	8s
build-artifacts / runner-test (ubuntu-latest)	26s
build-artifacts / runner-test (macos-latest)	34s
build-artifacts / gateway-build	12s
build-artifacts / code-lint	48s
build-artifacts / runner-compile (ubuntu-24.04-arm, linux, arm64)	23s
build-artifacts / runner-compile (ubuntu-24.04, linux, amd64)	29s
build-artifacts / generate-json-schema	18s
build-artifacts / python-build	24s
build-artifacts / python-test (macos-latest, 3.10)	3m 7s
build-artifacts / python-test (macos-latest, 3.9)	3m 38s
build-artifacts / python-test (macos-latest, 3.11)	3m 21s
build-artifacts / python-test (macos-latest, 3.12)	3m 49s
build-artifacts / python-test (macos-latest, 3.13)	2m 7s
build-artifacts / python-test (ubuntu-latest, 3.11)	3m 29s
build-artifacts / python-test (windows-latest, 3.9)	1m 50s
build-artifacts / python-test (ubuntu-latest, 3.12)	3m 56s
build-artifacts / python-test (windows-latest, 3.13)	3m 35s
build-artifacts / python-test (windows-latest, 3.12)	1m 56s
build-artifacts / python-test (ubuntu-latest, 3.9)	4m 18s
build-artifacts / python-test (ubuntu-latest, 3.13)	4m 0s
build-artifacts / python-test (windows-latest, 3.10)	1m 53s
build-artifacts / python-test (ubuntu-latest, 3.10)	4m 33s
build-artifacts / python-test (windows-latest, 3.11)	1m 53s
upload-post-pypi-artifacts	0s
upload-pre-pypi-artifacts	0s
	51m 9s

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