feat: app hang capture on Android

[bitsandfoxes]

POC hooking up the app hang capture and heartbeat setup through sentry-java into sentry-native.

[github-actions]

	Fails
🚫	Please consider adding a changelog entry for the next release.

	Messages
📖	Do not forget to update Sentry-docs with your feature once the pull request gets approved.

Instructions and example for changelog

Please add an entry to CHANGELOG.md to the "Unreleased" section. Make sure the entry includes this PR's number.

Example:

## Unreleased

### Features

- app hang capture on Android ([#2745](https://github.com/getsentry/sentry-unity/pull/2745))

If none of the above apply, you can opt out of this check by adding #skip-changelog to the PR description or adding a skip-changelog label.

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