feat(beyondcorp): generate library

[coryan]

Part of the work for #9340

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[google-cloud-cpp-bot]

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[codecov]

Codecov Report

Merging #9555 (e67c880) into main (3f30044) will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #9555   +/-   ##
=======================================
  Coverage   94.37%   94.37%           
=======================================
  Files        1490     1490           
  Lines      137543   137543           
=======================================
+ Hits       129802   129807    +5     
+ Misses       7741     7736    -5     

Impacted Files	Coverage Δ
...le/cloud/storage/internal/curl_download_request.cc	87.62% <0.00%> (-1.01%)	⬇️
google/cloud/internal/curl_impl.cc	89.86% <0.00%> (+0.22%)	⬆️
...cloud/pubsub/internal/subscription_session_test.cc	98.49% <0.00%> (+0.50%)	⬆️
...le/cloud/internal/default_completion_queue_impl.cc	97.15% <0.00%> (+0.56%)	⬆️
...loud/bigtable/internal/connection_refresh_state.cc	98.61% <0.00%> (+2.77%)	⬆️
...e/cloud/pubsublite/internal/alarm_registry_impl.cc	100.00% <0.00%> (+2.94%)	⬆️

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[google-cloud-cpp-bot]

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