containers: Add a way to intercept TCP connections from containers

[gabivlj]

No description provided.

[ask-bonk]

I loaded six review skills (kj-style, workerd-safety-review, workerd-api-review, ts-style, pr-review-guide, and identify-reviewer) to prepare for the code review, identified myself as the ask-bonk[bot] reviewer via gh auth status and git config, and fetched the full PR #6480 diff to analyze the changes for adding TCP connection interception to containers.

github run

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 73 lines in your changes missing coverage. Please review.
✅ Project coverage is 70.84%. Comparing base (4471142) to head (f329fb8).

Files with missing lines	Patch %	Lines
src/workerd/server/container-client.c++	0.00%	64 Missing ⚠️
src/workerd/api/container.c++	0.00%	9 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6480      +/-   ##
==========================================
- Coverage   70.87%   70.84%   -0.04%     
==========================================
  Files         434      434              
  Lines      122003   122063      +60     
  Branches    19104    19109       +5     
==========================================
- Hits        86474    86472       -2     
- Misses      24235    24295      +60     
- Partials    11294    11296       +2     

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[anonrig]

LGTM