feat(datadog): add the Datadog v1 SDK (monitors + service level objectives)

[gwkline]

New @distilled.cloud/datadog package generated from Datadog's official v1 OpenAPI description, covering the Monitors and Service Level Objectives services. Companion to alchemy-run/alchemy#1215, which builds Datadog.Monitor / Datadog.ServiceLevelObjective alchemy resources on these operations.

import * as Monitors from "@distilled.cloud/datadog/monitors";

const monitor = yield* Monitors.createMonitor;
yield* monitor({
  type: "query alert",
  query: "avg(last_5m):avg:system.cpu.user{*} > 90",
  name: "High CPU",
});

• Spec source: sparse-checked-out submodule of DataDog/datadog-api-client-typescript narrowed to .generator/schemas/v1/openapi.yaml (~1.6 MB on disk; specs:fetch follows the github package's recipe, README documents the sparse footgun).
• Pipeline: the GitHub tag-bucketed shape — YAML parsed with Bun.YAML, patch chain applied once to the full document, operations bucketed by primary tag, converted per-tag via convertOpenApiToSmithy. Tags are allowlisted (TAG_ALLOWLIST in scripts/convert.ts) so every generated operation has a live consumer; coverage grows tag-by-tag (Downtimes, Dashboards, Synthetics, …).
• Protocol: key-authenticated REST via makeRestProtocol — DD-API-KEY + optional DD-APPLICATION-KEY headers, base URL from Credentials (regional sites via DD_SITE / siteToApiBaseUrl), { "errors": ["…"] } error envelope, UnknownDatadogError fallback.
• Surface: wire names kept verbatim (snake_case) like github; service modules on subpath imports (@distilled.cloud/datadog/monitors) and the Services barrel — no root spread, since each module defines its own per-status error classes.
• 2 Smithy models, 20 operations; tsc -b green for both tsconfigs.

Not yet exercised against the live Datadog API — the alchemy PR's lifecycle tests are skipIf-gated on DD_API_KEY/DD_APP_KEY, which weren't available in this environment; first live runs may surface patch-worthy error typings.

🤖 Generated with Claude Code

[sam-goodwin]

What's the status here? What's left to be done @Mkassabov @gwkline ?