Update intermodal API: Add bike_transport

Author: pablohoch

_includes/samples/IntermodalRequest.json

@@ -48,6 +48,7 @@
     ],
     "search_type": "Accessibility",
     "search_dir": "Forward",
-    "max_transfers": -1
+    "max_transfers": -1,
+    "bike_transport": false
   }
 }

docs/api/endpoint/intermodal.md

@@ -32,6 +32,8 @@ This is the intermodal routing API. Intermodal here means that start as well as
     - `Backward`: the start parameter specifies the arrival of the journey. The destination parameter specifies the departure of the journey.
   - ##### <span class="param">max_transfers</span> optional, default is `-1`
     The maximum number of transfers allowed per journey. If set to `-1`, the internal default value is used.
+  - ##### <span class="param">bike_transport</span> optional, default is `false`
+    Whether only journeys where bike transport is allowed should be considered. If set to `true`, only trips where bike transport is allowed can be used.
 
 ## Start