Improve Upsert support for check-ins

### Problem Statement

Upserts are currently only available when manually using `Sentry.captureCheckIn()`

### Solution Brainstorm

- A new param for `CheckInUtils.withCheckIn()`
- Check if there's a `@Scheduled` annotation on a task annotated with `@SentryCheckIn` and read schedule from there
- Read schedule from `Trigger` in quartz
- CRON expressions in quartz have a different syntax we'd need to support