Trigg event action from WebUI

Hi

Should be possible to trigg event/action from WebUI.
I've an use case where I need to detect when a repository is created/moved to/from a specific organization.
I need to execute a script to add new repo on our workflow

On another use case should be trigg user creation to set it on different team.

The issue names no files, tests, or entry points. Start by tracing how the WebUI handles repository and user creation or movement, then identify the event/action path; the work is done when both described use cases can be triggered from the WebUI and are covered by appropriate tests.

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