feat: native-side access

**Is your feature request related to a problem? Please describe:**
Nope, pure functionality addition.

**Describe the solution you'd like:**
I'd love to be able to access the "implementation"-API surface area from Swift/Java/Kotlin/Etc. My use case is building a native plugin that interacts with the same SQLite database as the JS side. Specifically, I want to scribble down location tracking data from the native side, so I'm not dependent on the JS layer doing this (and getting shut down or whatever).

**Describe alternatives you've considered:**
I've built this as a JS process, but it seems like my background processes constantly get shut down for one reason or another, and that's resulting in missed tracking points.

**Additional context:**
I was thinking of turning these objects into singletons, so they can be easily grabbed from elsewhere in the application.