Indicate to the user that they can zoom on a CFG

[twizmwazin]

This could take the form of floating action buttons, some text in the corner, google maps is probably not a bad place to look for inspiration.

[rhelmot]

IDA also supports zoom, through ctrl+scroll (same as us). I think the consensus about that feature is that it's a) not often necessary because IDA has the graph overview window in the corner which shows a very zoomed out view of the graph with a box to indicate the current viewport, and b) it's pretty intuitive because it copies the mechanism that browsers use. I say that if we want to make it even more intuitive, we should add ctrl + and ctrl - as zoom shortcuts as well as a View -> Zoom menu.

[github-actions[bot]]

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[ltfish]

We already solved this problem by introducing the zoom minigraph.