chore: add package topics (#8)

Author: josxha

pubspec.yaml

@@ -1,6 +1,7 @@
 name: maplibre
 description: "Permissive and performant mapping library that supports Mapbox Vector Tiles (MVT) powered by MapLibre SDKs"
 version: 0.0.1
+topics: [ map, maplibre, mvt ]
 repository: https://github.com/josxha/flutter-maplibre
 issue_tracker: https://github.com/josxha/flutter-maplibre/issues
 homepage: https://github.io/josxha/flutter-maplibre