Navigate and zoom the flamegraph just by (double) clicking

This idea comes from the [hotspot tool](https://github.com/KDAB/hotspot).

Clicking a node does zoom on this node: it takes the full available width, but keeps the parent nodes that can still be clicked to zoom out. We could still keep the existing zoom in/out gestures using the mousewheel.

What do you think gregtatum mstange zoepage ?

┆Issue is synchronized with this [Jira Task](https://mozilla-hub.atlassian.net/browse/FP-737)