Unified page for both coverage report and fuzz introspector call tree

[oliverchang]

Currently, it's not the best experience for someone reading the fuzz introspector report to constantly switch between the coverage report and the call tree page.

A better longer term solution here may be to combine the two -- the calltree can e.g. be an overlay on top of the coverage report. This should be extensible such that fuzzing infra (such as ClusterFuzz) can also overlay the coverage report with additional information from actual fuzzing runs.

[AdamKorcz]

A solution could be a feature to split the screen and have the call tree in one side and the coverage report in the other. This would allow interaction between the two: Eg you can navigate around the coverage report, but you can also select a function from the calltree, and the coverage report would jump to that part.

[oliverchang]

This would be quite nice to have, especially with branch level blocker information shown together with the blocking branches themselves. @Navidem @AdamKorcz would we perhaps prioritise this this quarter?

[Navidem]

Sure we can start with @AdamKorcz's idea on having split screen to navigate between call tree and coverage report.

That said, we have to figure out how to mix branch blocker (other than the blocker tables) with the rest of portal.