feat(sidekick/rust): decouple option extraction and support resource names

[haphungw]

Inject resource name generation into the Rust generator.

Fixes #4183

[gemini-code-assist]

Code Review

This pull request refactors resource name generation in the Rust sidekick by decoupling the creation of resource name arguments from the annotation phase and moving the string formatting into the Rust template. However, the implementation introduces a critical code injection vulnerability. It injects untrusted strings from the API model directly into the generated Rust code without proper sanitization or escaping. Specifically, ResourceNameTemplate and ResourceNameArgs are used in the mustache template with triple braces {{{...}}}, disabling escaping and potentially allowing an attacker to inject arbitrary code. Furthermore, there's an issue in the mustache template's string formatting that will likely cause compilation failures.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.90%. Comparing base (584600d) to head (15ca95e).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4352      +/-   ##
==========================================
- Coverage   81.91%   81.90%   -0.01%     
==========================================
  Files          99       99              
  Lines        8127     8126       -1     
==========================================
- Hits         6657     6656       -1     
  Misses       1022     1022              
  Partials      448      448              

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[westarle]

Is there a draft PR with the resulting code?

[haphungw]

Is there a draft PR with the resulting code?

googleapis/google-cloud-rust#4838

I update the generated output for both dns and compute here.