Add snippet for enabling diagnostic stack traces

[riggaroo]

Demo how to enable diagnostic stack traces in Jetpack Compose for improved debugging.

Note: You need Kotlin 2.3 and R8 enabled to make GroupKeys option work

[snippet-bot]

Here is the summary of changes.

You are about to add 1 region tag.

• compose/snippets/src/main/java/com/example/compose/snippets/performance/Stacktraces.kt:23, tag android_compose_stacktraces_enable

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