Start in safe mode if we detect a crash

[sonnyp]

After https://github.com/sonnyp/Workbench/pull/220

In https://github.com/sonnyp/Workbench/pull/220 we added a safe mode. But it has to be manually updated. It can't be enabled if the app is in crash loop.

Let's add a crash detection mechanism and start the app in safe mode if it was detected.

Bonus point for adding a crash report button to a prefilled github issue.

If it works well we can remove the safe mode UI setting