Feature idea for events

[Matthijz98]

I really like umami, but the events still feel a bit limited.

I came across this project: https://github.com/operational-co/operational.co
And I really like the way they handle events. The push notifications feature would not be needed for me because I get too many events for that.

But the way of displaying events are really nice and would integrate perfectly with umami.
The structured events: https://operational.co/api/structured-events are really cool and would be able to be backwards compatible.

I think it would be mostly front-end changes, probably the only harder thing to do would be the contexts: https://operational.co/api/contexts.