Track composable functions with @SentryTraceable annotation

### Description

Create transactions/spans for `@Composable` functions annotated with `@SentryTraceable`, so we can enrich events that pop up within that composable lifetime. The code to measure that could roughly look like this:
```kotlin
DisposableEffect(Unit) {
Log.e("SENTRY", "ENTERED COMPOSITION")
onDispose {
Log.e("SENTRY", "LEFT COMPOSITION")
}
}
```

Would require bytecode manipulation through SAGP.

首先定位現有的 @SentryTraceable 註解和 SAGP 整合，然後檢視 @Composable 函式如何使用 DisposableEffect 來管理 composition 生命週期。定義進入和離開帶註解 composable 時 transaction 或 span 的行為，並驗證其生命週期內的事件是否如預期獲得豐富。

由索引模型根據 Issue 內容生成。