Polygon library

1. tplmapsflutterplugin package
2. documentation
3. Polygon.dart

tplmapsflutterplugin package

1. Libraries
2. Camera
3. Circle
4. LatLng
5. Marker
6. Polygon
7. Polyline
8. tplmapsflutterplugin
9. tplmapsflutterplugin_method_channel
10. tplmapsflutterplugin_platform_interface
11. TplMapsView