Added map screen + other stuff

app/(tabs)/mapScreen.tsx

@@ -0,0 +1,41 @@
+// MapScreen.tsx
+import React from 'react';
+import { StyleSheet, View, Dimensions } from 'react-native';
+import MapView, { Marker, PROVIDER_DEFAULT } from 'react-native-maps';
+
+const MapScreen: React.FC = () => {
+  const region = {
+    latitude: 48.8566,
+    longitude: 2.3522,
+    latitudeDelta: 0.05,
+    longitudeDelta: 0.05,
+  };
+
+  return (
+    <View style={styles.container}>
+      <MapView
+        provider={PROVIDER_DEFAULT} // OpenStreetMap
+        style={styles.map}
+        region={region}
+      >
+        <Marker
+          coordinate={{ latitude: 48.8566, longitude: 2.3522 }}
+          title="Paris"
+          description="Capitale de la France"
+        />
+      </MapView>
+    </View>
+  );
+};
+
+const styles = StyleSheet.create({
+  container: {
+    flex: 1,
+  },
+  map: {
+    width: Dimensions.get('window').width,
+    height: Dimensions.get('window').height,
+  },
+});
+
+export default MapScreen;