Integrate crash reporter #2681

To make crashes more visible and easier to debug it would help to catch and report crashes.

In #2675 it was suggested we could use Sentry along with Google Crashpad. The Sentry Native SDK should make this easy.

• Set up Sentry account for Tiled
• Add UI for enabling / disabling crash reporting
• Build Sentry as part of the continuous integration on all platforms
  • Windows
  • macOS
  • Linux
• Setup the uploading of debug information to Sentry
  • Windows
  • macOS
  • Linux

Some operating systems have their own crash reporting systems:

• Fedora: Retraces for the tiled package