Add a container inspect API to read labels

[gpanders]

There is currently no way to read the labels set in a container. Add a new inspect API that returns the labels set on a container.

In the future, this can be extended to also provide other information (like entrypoint or env).

[ask-bonk]

UnknownError: ProviderInitError

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[ask-bonk]

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[github-actions]

The generated output of @cloudflare/workers-types matches the snapshot in types/generated-snapshot 🎉

[petebacondarwin]

Looks like the type snapshots need fixing

[gpanders]

Moved this under the experimental flag and addressed some feedback from a local AI reviewer.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 62 lines in your changes missing coverage. Please review.
✅ Project coverage is 66.41%. Comparing base (b71cfd7) to head (f12203a).
⚠️ Report is 39 commits behind head on main.

Files with missing lines	Patch %	Lines
src/workerd/server/container-client.c++	0.00%	40 Missing ⚠️
src/workerd/api/container.c++	0.00%	22 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6631      +/-   ##
==========================================
- Coverage   66.51%   66.41%   -0.10%     
==========================================
  Files         405      405              
  Lines      115815   116154     +339     
  Branches    19381    19439      +58     
==========================================
+ Hits        77032    77142     +110     
- Misses      27208    27431     +223     
- Partials    11575    11581       +6     

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[codspeed-hq]

Merging this PR will not alter performance

✅ 72 untouched benchmarks
⏩ 129 skipped benchmarks¹

---

_{Comparing ganders/xquymsrukwml (f12203a) with main (b322726)}

Footnotes

1. 129 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[gpanders]

Looks like the type snapshots need fixing

Fixed now, can you please re-review @petebacondarwin ?