Add support for gestureHandling for Google Maps (#16287)

Add support for the gestureHandling property on the MapOptions
interface.

types/googlemaps/googlemaps-tests.ts

@@ -11,6 +11,7 @@ let map = new google.maps.Map(
     fullscreenControlOptions: {
         position: google.maps.ControlPosition.RIGHT_TOP
     },
+    gestureHandling: "cooperative",
     scrollwheel: true,
     zoom: 4
 });

types/googlemaps/index.d.ts

@@ -1,6 +1,6 @@
 // Type definitions for Google Maps JavaScript API 3.26
 // Project: https://developers.google.com/maps/
-// Definitions by: Folia A/S <http://www.folia.dk>, Chris Wrench <https://github.com/cgwrench>, Kiarash Ghiaseddin <https://github.com/Silver-Connection/DefinitelyTyped>,  Grant Hutchins <https://github.com/nertzy>, Denis Atyasov <https://github.com/xaolas>, Michael McMullin <https://github.com/mrmcnerd>
+// Definitions by: Folia A/S <http://www.folia.dk>, Chris Wrench <https://github.com/cgwrench>, Kiarash Ghiaseddin <https://github.com/Silver-Connection/DefinitelyTyped>,  Grant Hutchins <https://github.com/nertzy>, Denis Atyasov <https://github.com/xaolas>, Michael McMullin <https://github.com/mrmcnerd>, Martin Costello <https://github.com/martincostello>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 /*
@@ -95,6 +95,10 @@ declare namespace google.maps {
         fullscreenControl?: boolean;
         /** The display options for the Fullscreen control. */
         fullscreenControlOptions?: FullscreenControlOptions;
+        /**
+         * This setting controls how gestures on the map are handled.
+         */
+        gestureHandling?: GestureHandlingOptions;
         /**
          * The heading for aerial imagery in degrees measured clockwise from cardinal
          * direction North. Headings are snapped to the nearest available angle for
@@ -250,6 +254,12 @@ declare namespace google.maps {
         opened?: boolean;
     }
 
+    export type GestureHandlingOptions =
+        "cooperative" |
+        "greedy" |
+        "none" |
+        "auto";
+
     /** Options for the rendering of the pan control. */
     export interface PanControlOptions {
         /**