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

packages/map-sdk/README.md

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+# @lynkedup/map-sdk
+
+A small TypeScript wrapper around `react-native-maps` to provide a consistent API and typed components.
+
+## Usage
+
+Install peer deps in your app:
+
+```
+npm install react-native react-native-maps
+# and add this package via workspace or npm/yarn
+```
+
+Basic usage:
+
+```ts
+import React from 'react';
+import { MapView, Marker } from '@lynkedup/map-sdk';
+
+export default function App() {
+  return (
+    <MapView
+      style={{ flex: 1 }}
+      initialRegion={{ latitude: 37.78825, longitude: -122.4324, latitudeDelta: 0.0922, longitudeDelta: 0.0421 }}
+    >
+      <Marker coordinate={{ latitude: 37.78825, longitude: -122.4324 }} />
+    </MapView>
+  );
+}
+```
+
+## Notes
+- This package delegates to `react-native-maps` for platform implementations. Follow `react-native-maps` docs for iOS/Android setup (Google Maps API key, pods, manifest permissions).

packages/map-sdk/package.json

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+{
+    "name": "@lynkedup/map-sdk",
+    "version": "0.1.0",
+    "main": "dist/index.js",
+    "types": "dist/index.d.ts",
+    "license": "MIT",
+    "files": [
+        "dist"
+    ],
+    "scripts": {
+        "build": "tsc -p tsconfig.json",
+        "lint": "eslint . --ext .ts,.tsx"
+    },
+    "peerDependencies": {
+        "react": ">=17",
+        "react-native": ">=0.70",
+        "react-native-maps": "^1.3.2"
+    },
+    "devDependencies": {
+        "typescript": "^5.0.0",
+        "eslint": "^8.0.0",
+        "@types/react": "^18.0.0",
+        "@types/react-native": "^0.70.0"
+    }
+}

packages/map-sdk/src/MapView.tsx

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+import React from 'react';
+import RNMapView, { MapViewProps as RNMapViewProps } from 'react-native-maps';
+
+export type MapProps = RNMapViewProps;
+
+const MapView: React.FC<MapProps> = (props) => {
+    return <RNMapView {...props}>{props.children}</RNMapView>;
+};
+
+export default MapView;

packages/map-sdk/src/index.ts

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+export { default as MapView } from './MapView';
+export { Marker, Polyline, PROVIDER_GOOGLE } from 'react-native-maps';

packages/map-sdk/tsconfig.json

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+{
+    "compilerOptions": {
+        "target": "ES2019",
+        "module": "CommonJS",
+        "jsx": "react",
+        "declaration": true,
+        "outDir": "dist",
+        "strict": true,
+        "esModuleInterop": true,
+        "skipLibCheck": true
+    },
+    "include": [
+        "src/**/*"
+    ]
+}