Artifact/event processing

[wild-endeavor]

• Replace the server configuration with a block inside artifacts service configuration - doesn't make sense to share, different services use different ports.
• Add piping in flyte single binary command
• Move init/setmetrickeys to avoid
• Revert change to cloudevent sender made a while back so now it matches master again.
• Add interfaces and structure for handling events.
• Add a sandbox publisher to stdlib and a reader in artifact service.
• Move SetMetricKeys to artifact main since single binary was complaining
• Add cloud provider name constants to stdlib.
• Update artifact server error handling.
• Update server to bind to 0.0.0.0 explicitly
• Add task and workflow event handlers
• Mark some metrics and comments.
• Add fixtures to avoid hitting the default grpc unimplemented endpoints.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (729b300) 59.07% compared to head (31d8e7d) 58.07%.

❗ Current head 31d8e7d differs from pull request most recent head cb8f47d. Consider uploading reports for the commit cb8f47d to get more accurate results

Additional details and impacted files

@@                        Coverage Diff                         @@
##           artifacts-bring-admin-monorepo    #4277      +/-   ##
==================================================================
- Coverage                           59.07%   58.07%   -1.01%     
==================================================================
  Files                                 387       34     -353     
  Lines                               32915     1784   -31131     
==================================================================
- Hits                                19446     1036   -18410     
+ Misses                              11971      657   -11314     
+ Partials                             1498       91    -1407     

Flag	Coverage Δ
unittests	?

Flags with carried forward coverage won't be shown. Click here to find out more.

see 384 files with indirect coverage changes

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.