feat(google-maps-routeoptimization-v1): onboard new client library

[noahdietz]

On one field, the way the proto documentation is line-wrapped after sanitization (proto) resulted in code that didn't compile. Using the documentation override feature to reformat one comment.

Towards googleapis/librarian#6594

[gemini-code-assist]

Code Review

This pull request adds the new generated client library for the Google Maps Route Optimization API (google-maps-routeoptimization-v1), integrating it into the workspace and configuring documentation overrides. Feedback on the changes highlights a typo in the generated documentation for optimize_tours_uri in client.rs, which incorrectly references OptimizeToursLongRunningMetadata instead of OptimizeToursUriMetadata. A configuration override in librarian.yaml was suggested to resolve this issue.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.25%. Comparing base (ecd5aeb) to head (a14774e).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6301   +/-   ##
=======================================
  Coverage   96.25%   96.25%           
=======================================
  Files         280      280           
  Lines       72194    72194           
=======================================
  Hits        69488    69488           
  Misses       2706     2706           

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