feat(apikeys): generate library

[coryan]

This change is 

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[codecov]

Codecov Report

Merging #9699 (7b4d0a7) into main (bc12403) will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #9699   +/-   ##
=======================================
  Coverage   93.89%   93.89%           
=======================================
  Files        1496     1496           
  Lines      139222   139222           
=======================================
+ Hits       130719   130721    +2     
+ Misses       8503     8501    -2     

Impacted Files	Coverage Δ
...e/cloud/pubsublite/internal/alarm_registry_impl.cc	97.05% <0.00%> (-2.95%)	⬇️
...loud/bigtable/internal/connection_refresh_state.cc	95.83% <0.00%> (-2.78%)	⬇️
...le/cloud/internal/default_completion_queue_impl.cc	96.59% <0.00%> (-0.57%)	⬇️
google/cloud/storage/internal/curl_handle.cc	78.37% <0.00%> (-0.55%)	⬇️
...le/cloud/storage/internal/curl_download_request.cc	89.29% <0.00%> (-0.34%)	⬇️
...cloud/pubsub/internal/subscription_session_test.cc	98.15% <0.00%> (-0.17%)	⬇️
google/cloud/pubsub/samples/samples.cc	90.77% <0.00%> (+0.07%)	⬆️
...ud/spanner/integration_tests/client_stress_test.cc	84.86% <0.00%> (+0.65%)	⬆️
...bigtable/examples/bigtable_hello_instance_admin.cc	83.00% <0.00%> (+2.00%)	⬆️
...te/integration_tests/publisher_integration_test.cc	98.68% <0.00%> (+6.57%)	⬆️

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