Add routing support to MapboxGeocoding

Expected Behavior

The Java SDK's MapboxGeocoding.builder() should be able to take a routing boolean.

https://docs.mapbox.com/api/search/#forward-geocoding

Current Behavior

There's currently no builder method for this geocoding parameter.

Possible Solution

add a routing(boolean) method to MapboxGeocoding.builder() and routing setup to the GeocodingService class

Context (Environment)

Mismatch between current Geocoding API offerings and the Java SDK's capabilities were brought up amongst some search chat between @yuletide , @scottsfarley93 , and others.

MapboxGeocoding.builder() から開始し、そのオプションが GeocodingService クラスにどのように渡されるかを追跡します。既存のジオコーディングパラメータの設定に従い、その後、routing の boolean を builder 経由で指定でき、それが Mapbox Geocoding API に送信されるリクエストに含まれることを確認します。