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

先檢視連結的 sentry-dart pull request，以及 sentry-java 中對 Android 事件和附件的處理。確定選擇性 logcat 擷取、隨需取得和 Flutter/Dart 同步應如何保持一致。完成標準是 Android 事件可以選擇性地包含 logcat 輸出，且可以要求取得該輸出以供跨平台使用。

由索引模型根據 Issue 內容生成。