docs(pubsub): add kinesis sample

[alevenberg]

This change is 

[alevenberg]

The emulator needs to be updated.

Currently getting

ingestion_data_source_settings.aws_kinesis.gcp_service_account but got 2024-02-12T19:53:26.779777190Z [DEBUG] <140328757732352> UpdateTopic() >> status=INVALID_ARGUMENT: Invalid update_mask provided in the UpdateTopicRequest: ingestion_data_source_settings.aws_kinesis.gcp_service_account is not a known Topic field. Note that field paths must be of the form 'schema_settings' rather than 'schemaSetings'. (google/cloud/internal/log_wrapper.cc:29)

[codecov]

Codecov Report

Attention: Patch coverage is 95.65217% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 93.17%. Comparing base (77e4fff) to head (1754f51).
Report is 3 commits behind head on main.

Files	Patch %	Lines
google/cloud/pubsub/samples/topic_admin_samples.cc	95.65%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #13593      +/-   ##
==========================================
- Coverage   93.17%   93.17%   -0.01%     
==========================================
  Files        2235     2235              
  Lines      193634   193680      +46     
==========================================
+ Hits       180425   180454      +29     
- Misses      13209    13226      +17     

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[alevenberg]

Step #5: } (google/cloud/internal/log_wrapper.cc:24)
Step #5: 2024-03-08T19:02:06.763819768Z [DEBUG] <139986183036096> CreateTopic() >> status=NOT_FOUND: Cloud Pub/Sub tried to connect to the ingestion data source but could not find it: Not found; Gaia id not found for email fake-service-account@fake-gcp-project.iam.gserviceaccount.com. (google/cloud/internal/log_wrapper.cc:29)
Step #5: 2024-03-08T19:02:06.764360261Z [DEBUG] <139986183036096> DeleteTopic() << google.pubsub.v1.DeleteTopicRequest {
Step #5:   topic: "projects/cloud-cpp-testing-resources/topics/cloud-cpp-samples-2024-03-08-igbrzaxdlukjxbvcdxebjrkwrfntguwk"
Step #5: } (google/cloud/internal/log_wrapper.cc:24)
Step #5: 2024-03-08T19:02:07.320414091Z [DEBUG] <139986183036096> DeleteTopic() >> status=OK (google/cloud/internal/log_wrapper.cc:29)
Step #5: terminate called after throwing an instance of 'google::cloud::v2_23::Status'

[alevenberg]

Service team says we need to wait till 3/15 for the integration test to pass

[alevenberg]

Ready for review!