feat: added AndroidNativeAnrEnabled and related options

[bitsandfoxes]

Problem

Unity games can get stuck in multiple places and as of right now the SDK surfaces only the C# watchdog integration to capture ANRs. This comes with several limitations. sentry-java has its own ANR integrations that the SDK currently hardcoded opts-out.

Context

Unity games have their own main thread. The sentry-java SDK has a v1 and a v2 ANR integration that monitors the Android UI thread.

There are these native options:

• enableAnr
• enableScopePersistence
• isReportHistoricalAnrs
• isAttachAnrThreadDump

Since the work next to each other we keep the umbrella flags AnrDetectionEnabled and AndroidNativeAnrEnabled separated.

The way this works is on API >= 30 sentry-java will use ApplicationExitInfo to read OS-reported ANRs to generate events out of those. Since this happens on the next launch, enableScopePersistence allows the SDK to store the scope to disk to then enrich the event with the scope at the time of the ANR.

Proposal

We can surface these options and pass them to sentry-java. These are especially valuable if users have their own launcher, or plugins running outside of the Unity game loop.
sentry-java takes care of picking the supported ANR integration. On API < 30 this is "just" a watchdog, similar to what we have for C#.

Follow Up

There are a couple of follow-ups:

1. The sentry-java manifest needs to accept the historic anr capture flag, see feat: added ANR_REPORT_HISTORICAL to the ManifestMetaDataReader sentry-java#5387
2. Improvements to our C# anr capture mechanism see ANR Detection Improvements #1961
3. Add ANR capture to e2e tests
4. Add native ANR trigger to samples

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[bitsandfoxes]

The setEnableScopePersistence only affects the ANR v2 and the tombstone integration. And the Unity SDK only surfaces the ANR with this PR. So I'm opting to keep this option merged into the AnrNativeAnrEnabled.