Add eb events --since and --tail

[glensc]

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Tell us about your request

Please add --since=TIMESTAMP and/or --tail=LINES options to eb events command.

I would like to follow logs since some timestamp (for example deploy started), similar to kubectl has.

I would also accept --tail=0 option to start following for new entries only.

Additional context

I'm attempting to build CI workflow that starts update an environment and print events as they occur until deploy is finished.

[glensc]

Could use aws elasticbeanstalk describe-events because it has --start-time, but it doesn't have --follow...

$ aws elasticbeanstalk describe-events --application-name="..." --environment-name="..." --start-time="2024-06-04T00:00:00+00:00" --output=text