Add schema-first OTEL contracts #3673

Job	Run time
cargo	1m 47s
test (namespace-profile-linux-x86-64)	4m 50s
lint	3m 56s
test (namespace-profile-macos-arm64)	6m 8s
default-ref-policy	22s
pnpm-builder-contract	1m 23s
devenv-perf	6m 47s
nix-check (namespace-profile-macos-arm64)	6m 39s
nix-fod-check (namespace-profile-linux-x86-64)	2m 56s
test-integration-notion	4m 6s
nix-check (namespace-profile-linux-x86-64)	4m 42s
nix-fod-check (namespace-profile-macos-arm64)	6m 39s
source-shape	6s
test-integration-restate	4m 4s
pnpm-regression	2m 22s
typecheck	4m 16s
nix-closure-sizes	2m 21s
deploy-storybooks	4m 52s
notify-alignment	-1s
ci/measurements-report	-1s
	1h 8m 14s

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