Add initial implementation of Map SDK and example app

- Create README for the main repository and example app
- Implement example app with MapView and Marker components
- Add package.json for example app with necessary scripts and dependencies
- Create Map SDK package with TypeScript wrapper around react-native-maps
- Define TypeScript configuration for the SDK

example/README.md

@@ -0,0 +1,15 @@
+# Example App
+
+This example demonstrates usage of `@lynkedup/map-sdk`.
+
+Setup:
+
+1. From repo root run `npm run bootstrap` to install workspace packages.
+2. From `example` run `npm install` to install native deps.
+3. iOS: run `npx pod-install ios` and add your Google Maps API key if you use Google provider.
+4. Android: ensure Google Play services and API keys are set in `AndroidManifest.xml` if using Google maps.
+
+Run:
+- `npm run ios` or `npm run android` from `example` folder.
+
+See `react-native-maps` docs for platform-specific instructions: https://github.com/react-native-maps/react-native-maps