impl(v3): bzlmod support for otel v1.24

[scotthart]

No description provided.

[gemini-code-assist]

Summary of Changes

Hello @scotthart, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request primarily focuses on upgrading the OpenTelemetry C++ library to its latest version, 1.24.0, to leverage recent improvements and maintain compatibility. It also includes necessary adjustments to the Bazel build configuration for explicit ABI versioning and updates to test mocks to align with the new OpenTelemetry API.

Highlights

• OpenTelemetry C++ Library Upgrade: The opentelemetry-cpp dependency has been updated from version 1.22.0 to 1.24.0 in MODULE.bazel.
• Bazel ABI Version Configuration: A new Bazel build flag has been added to .bazelrc to explicitly set the OpenTelemetry C++ API ABI version to 2.
• Test Mock Updates: The MockMeter class in google/cloud/bigtable/internal/metrics_test.cc has been updated to include mock implementations for the new RegisterCallback and DeregisterCallback methods, aligning with the updated OpenTelemetry API.
• Dependency Removal: The crc32c dependency has been removed from MODULE.bazel.

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[gemini-code-assist]

Code Review

This pull request updates the OpenTelemetry dependency to version 1.24.0 and adds bzlmod support. The changes include updating the dependency version in MODULE.bazel, removing a now-redundant crc32c dependency, adding a new build flag for bzlmod in .bazelrc, and updating the MockMeter in metrics_test.cc to reflect API changes in the new OpenTelemetry version. The changes are correct and well-implemented. I have no specific comments.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.83%. Comparing base (747b171) to head (32bba7d).
⚠️ Report is 1 commits behind head on prepare-for-v3.0.0.

Additional details and impacted files

@@                 Coverage Diff                 @@
##           prepare-for-v3.0.0   #15906   +/-   ##
===================================================
  Coverage               92.82%   92.83%           
===================================================
  Files                    2354     2354           
  Lines                  216300   216300           
===================================================
+ Hits                   200778   200798   +20     
+ Misses                  15522    15502   -20     

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