[Canvas] Ability to undo actions

[ryankeairns]

Describe the feature:
I would like the basic ability to undo recent actions.

Describe a specific use case for the feature:
For example, I delete or move an element and want to bring it back to its previous state using command-z/ctrl-z or some similar action.

Implementation-wise the deletion undo could be split to 3 things:

a) what affordance / gesture to use (now Backspace, in the future, ctrl-z),
b) how to help feature discovery (eg. what you or I wrote),
c) how to make the experience smoother, despite Redux

[monfera]

Meta issue: #23058

From our slack convo: it'd be good to avoid a confirmation dialog - as it's a modal thing (nomodes!) but maybe at some point we could add a transient annotation near the element, or somewhere on the side, showing what happened:

❌ element deleted... [click to undo]

so an affordance that

1. doesn't remove normal controls from other elements,
2. small but salient, doesn't occlude other things, and most importantly, doesn't add a fadeout screen over the entire thing,
3. it has a timeout and gets removed from the DOM after transitioning its opacity to zero

[rashidkpc]

This is currently implemented by the back and forward buttons in the browser, but it would be nice to wire them up to buttons and keyboard shortcuts

[elasticmachine]

Pinging @elastic/kibana-design

[cqliu1]

They both have shortcuts:
undo: cmd/ctrl+z
redo: cmd/ctrl+shift+z

I think all that's left is to add undo/redo buttons somewhere in the UI.

[ryankeairns]

I'm ok with just closing this issue. This particular action feels common enough that, as long as we're using the common shortcuts (which we are), that users will discover it.