Add --subscribe option to event stream command

This change introduces a new --subscribe (alias -s) option to the event
stream command, enabling users to filter the real-time event output by
one or more specific event types. The option allows more efficient
monitoring and scripting, especially for clients interested in a subset
of events.

Release-Notes: Adds support for filtering streamed events by type
Change-Id: Iafb774a48cb07096c4d48167ee56a6cf02150125