We have a problem: if files aren't loaded/required we don't have branch data. If they are added through track_files we give it 0/0 branches which we show as 100% coverage (all possible branches are covered).

That math is "wrong" though here because there are branches but we don't know what they are. We should probably count total branches here as "unkown" and establish that in our "math unive

Description

Like the old event reporter, move all the code that deals with crash reporting and sentry init into a new module.
This will help abstract away the knowledge of the crash capture to a single area.

Design

class CrashReporter
    constructor(enableCrashReporting)
    capture(error)

Existing Code

    // Only send crash reports if the user al