Next phase Notifications evolution

[anvabr]

Problem description

#2426 introduced cross-user (workflow) notifications into Guardian. At present the configuration of notifications, their filtering and frequency are hard-coded. More flexibility is required.

Requirements

Introduce the ability for users to configure which notifications they want to receive and how:

• a choice, per subject, of no notification at all, all notifications, throttling notifications for after certain number within the certain time period
• works with multi-policy chains within a single instance of Guardian, as well as Modules and Tools
• ability to trigger the notification from within the Policy
• ability to attach a message to the Notification when triggered explicitly
• a packaged-in (out-of-the box) set of sensible notifications which covers the majority of deployment scenarious

Definition of done

• Functionality is implemented as per the requirements section above
• Documentation is created
• Example notifications are implemented in the packaged policies

Acceptance criteria

Users can configure the display of notifications via Guardian UI

[dubgeis]

@prernaadev01 @anvabr @Pyatakov can we please get a timing estimate on this? cc: @sergmetelin @Neurone @justin-atwell

[prernaadev01]

@dubgeis After discussing it in detail, we would estimate it for 4 weeks to close this feature.