feat: support tracing and OTEL configuration for Worker observability

[zebp]

Fixes WO-729.

Adds support for the new Workers observability config options, traces for automatic tracing and destinations for emitting your logs/traces to OpenTelemetry compliant observability platforms.

---

• Tests
  • Tests included
  • Tests not necessary because:
• Public documentation
  • Cloudflare docs PR(s): [DRAFT] Workers Tracing / Exporting OTel  cloudflare-docs#24713
  • Documentation not necessary because:
• Wrangler V3 Backport
  • Wrangler PR:
  • Not necessary because: not a patch change

[changeset-bot]

🦋 Changeset detected

Latest commit: 9902ce2

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 3 packages

Name	Type
wrangler	Minor
@cloudflare/vite-plugin	Major
@cloudflare/vitest-pool-workers	Patch

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commit: 9902ce2