google_maps_webservice library Null safety

A local version with the features required to provide google places search and geocoding to form widgets

This is required as the published google_maps_webservice does not offer null safety in a stable release Once https://github.com/lejard-h/google_maps_webservice/issues/138 is resolved this should be removed and the published version should be used again

Classes

AddressComponent
Bounds
Component
GeocodingResponse
GeocodingResult
Geometry
GoogleMapsGeocoding
https://developers.google.com/maps/documentation/geocoding/start
GoogleMapsPlaces
https://developers.google.com/places/web-service/
GoogleResponse<T>
GoogleResponseList<T>
GoogleResponseStatus
Location
MatchedSubstring
OpeningHoursDetail
OpeningHoursPeriod
OpeningHoursPeriodDate
Photo
PlaceDetails
PlacesAutocompleteResponse
PlacesDetailsResponse
Prediction
Review
StreetAddress
StructuredFormatting
Term

Extensions

RouteTypeExt
TrafficModelExt
TransitModeExt
TransitRoutingPreferencesExt
TravelModeExt
UnitExt

Enums

PriceLevel
RouteType
TrafficModel
TransitMode
TransitRoutingPreferences
TravelMode
Unit