Add support to attach logcat output as an attachment

### Problem Statement

We could add a flag (disabled by default) that a user can enable so logcat output is stored and sent as an attachment to Android events

What would be nice in addition is to be able to get the logcat output on demand so we can sync it with Flutter and optionally also attach logcat output to Dart events

### Solution Brainstorm

Draft implementation was done by a contributor on the Flutter side

https://github.com/getsentry/sentry-dart/pull/3011