Experiments: UI for apply, branch, remove an experiment

[rogermparent]

Continues from #227

With commands that take Experiments, we'll naturally want to expose UI elements that allow us to run them. One pattern that could handle this group of actions would be a context menu that can be invoked via something like a right click and/or button on each Experiment row.

One implementation that stands out is right-click context menu, which would also work well for adding context menu functionality to any other element in the table, like individual checkpoints. I tested to make sure, and we can listen for right clicks in the webview.

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Design proposal

Single row actions preview:

Multiple rows actions preview:

More details and flows in the Figma spec.

[yalozhkin]

After researching the multiple selection topic and designing the proposal with the right-click, I thought about using the right-click instead of the icons on hover (but not sure if users get it quickly, need to test).

[mattseddon]

@rogermparent, covered by #1267?

[rogermparent]

I think so, I'll close this and pull some info and screenshots from this Issue's OP into #1267.

[maxagin]

Hey folks, while working on #1676 I have used some of the information from #228.

I found a few things that were not clear to me. I left a few questions in the Figma file https://www.figma.com/file/heCQb0FrIfreqn8MsIuV59/Actions-with-Experiments--%E2%80%A2-228 Please let me know wdyt.