Add sglang router minimal support #5678

Job	Run time
compute-version	2s
build-docs	0s
build-artifacts / runner-test (ubuntu-latest)	58s
build-artifacts / runner-test (macos-latest)	1m 3s
build-artifacts / code-lint	51s
build-artifacts / gateway-build	10s
build-artifacts / frontend-build	8s
build-artifacts / python-build	29s
build-artifacts / generate-json-schema	19s
build-artifacts / python-test (macos-latest, 3.9)	2m 7s
build-artifacts / python-test (ubuntu-latest, 3.11)	3m 59s
build-artifacts / python-test (macos-latest, 3.10)	2m 18s
build-artifacts / python-test (macos-latest, 3.12)	3m 42s
build-artifacts / python-test (ubuntu-latest, 3.10)	3m 59s
build-artifacts / python-test (macos-latest, 3.13)	2m 20s
build-artifacts / python-test (macos-latest, 3.11)	2m 53s
build-artifacts / python-test (ubuntu-latest, 3.9)	4m 8s
build-artifacts / python-test (ubuntu-latest, 3.13)	3m 46s
build-artifacts / python-test (windows-latest, 3.11)	1m 40s
build-artifacts / python-test (ubuntu-latest, 3.12)	3m 56s
build-artifacts / python-test (windows-latest, 3.12)	2m 12s
build-artifacts / python-test (windows-latest, 3.10)	2m 8s
build-artifacts / python-test (windows-latest, 3.9)	1m 40s
build-artifacts / python-test (windows-latest, 3.13)	2m 8s
build-artifacts / runner-compile (ubuntu-24.04, linux, amd64)	41s
build-artifacts / runner-compile (ubuntu-24.04-arm, linux, arm64)	31s
upload-post-pypi-artifacts	0s
upload-pre-pypi-artifacts	0s
	48m 8s

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