feat(AgmMap): add tilt option

add a tilt option allowing to tilt the camera 45° on close zooms

packages/core/directives/map.ts

@@ -260,6 +260,22 @@ export class AgmMap implements OnChanges, OnInit, OnDestroy {
    */
   @Input() gestureHandling: 'cooperative'|'greedy'|'none'|'auto' = 'auto';
 
+    /**
+     * Controls the automatic switching behavior for the angle of incidence of
+     * the map. The only allowed values are 0 and 45. The value 0 causes the map
+     * to always use a 0° overhead view regardless of the zoom level and
+     * viewport. The value 45 causes the tilt angle to automatically switch to
+     * 45 whenever 45° imagery is available for the current zoom level and
+     * viewport, and switch back to 0 whenever 45° imagery is not available
+     * (this is the default behavior). 45° imagery is only available for
+     * satellite and hybrid map types, within some locations, and at some zoom
+     * levels. Note: getTilt returns the current tilt angle, not the value
+     * specified by this option. Because getTilt and this option refer to
+     * different things, do not bind() the tilt property; doing so may yield
+     * unpredictable effects. (Default of AGM is 0 (disabled). Enable it with value 45.)
+     */
+  @Input() tilt: number = 0;
+
   /**
    * Options for restricting the bounds of the map.
    * User cannot pan or zoom away from restricted area.
@@ -274,7 +290,7 @@ export class AgmMap implements OnChanges, OnInit, OnDestroy {
     'streetViewControlOptions', 'zoom', 'mapTypeControl', 'mapTypeControlOptions', 'minZoom',
     'maxZoom', 'panControl', 'panControlOptions', 'rotateControl', 'rotateControlOptions',
     'fullscreenControl', 'fullscreenControlOptions', 'scaleControl', 'scaleControlOptions',
-    'mapTypeId', 'clickableIcons', 'gestureHandling', 'restriction'
+    'mapTypeId', 'clickableIcons', 'gestureHandling', 'tilt', 'restriction'
   ];
 
   private _observableSubscriptions: Subscription[] = [];
@@ -370,6 +386,7 @@ export class AgmMap implements OnChanges, OnInit, OnDestroy {
       mapTypeId: this.mapTypeId,
       clickableIcons: this.clickableIcons,
       gestureHandling: this.gestureHandling,
+      tilt: this.tilt,
       restriction: this.restriction,
     })
       .then(() => this._mapsWrapper.getNativeMap())

packages/core/services/google-maps-types.ts

@@ -187,6 +187,7 @@ export interface MapOptions {
   mapTypeId?: string|MapTypeId;
   clickableIcons?: boolean;
   gestureHandling?: 'cooperative'|'greedy'|'none'|'auto';
+  tilt?: number;
   restriction?: MapRestriction;
 }