Support Local Variables in stack frames

### Problem Statement

I looked around fro local variable support in the Java integration but didn't find it.

I see there was some small level of support added recently at https://github.com/getsentry/sentry-java/pull/4686 but I don't see how to utilize that in a server-side Java/Kotlin process (in my case, a GRPC server in vanilla Kotlin on the AWS Corretto 17 JVM).

### Solution Brainstorm

Coming from Rollbar, they were able to get local variables from a stack trace using a [native agent](https://github.com/rollbar/rollbar-java/tree/6a72e7b9b8c697d6f235388582baa1e348b3207e/native-agent). That might be the best hook point for obtaining this data.

先閱讀 pull request 4686 中參照的 Java 整合支援，並檢視連結的 Rollbar native-agent 實作。判斷如何在 JVM 上擷取伺服器端 Java/Kotlin 堆疊框架的區域變數，然後透過實作與測試定義並驗證支援的行為。

由索引模型根據 Issue 內容生成。