Add server API for UI templates #6423

Job	Run time
build-docs / build-docs	1m 28s
compute-version	3s
build-artifacts / gateway-build	10s
build-artifacts / runner-test (macos-latest)	1m 0s
build-artifacts / code-lint	48s
build-artifacts / runner-test (ubuntu-latest)	56s
build-artifacts / frontend-build	8s
build-artifacts / generate-json-schema	22s
build-artifacts / python-test (ubuntu-latest, 3.10)	2m 38s
build-artifacts / python-test (ubuntu-latest, 3.9)	2m 38s
build-artifacts / python-test (macos-latest, 3.9)	2m 43s
build-artifacts / python-test (macos-latest, 3.12)	2m 52s
build-artifacts / python-test (ubuntu-latest, 3.11)	2m 39s
build-artifacts / python-test (windows-latest, 3.13)	2m 18s
build-artifacts / python-test (ubuntu-latest, 3.13)	2m 39s
build-artifacts / python-test (macos-latest, 3.13)	2m 43s
build-artifacts / python-test (macos-latest, 3.11)	2m 53s
build-artifacts / python-test (windows-latest, 3.12)	2m 24s
build-artifacts / python-test (windows-latest, 3.9)	2m 31s
build-artifacts / python-test (windows-latest, 3.11)	2m 6s
build-artifacts / python-test (macos-latest, 3.10)	2m 23s
build-artifacts / python-test (windows-latest, 3.10)	2m 8s
build-artifacts / python-test (ubuntu-latest, 3.12)	2m 39s
build-artifacts / python-build	20s
build-artifacts / runner-compile (ubuntu-24.04-arm, linux, arm64)	39s
build-artifacts / runner-compile (ubuntu-24.04, linux, amd64)	30s
upload-pre-pypi-artifacts	0s
upload-post-pypi-artifacts	0s
	44m 38s

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