chore(apis): add HashMap to the DI

HashMap will be used inside of angular-animate.js to store details of
ongoing animations on a per-element basis. Right now HashMap is only
available in core, but this patch will make it available to other areas.

Closes #11311

Author: matsko

src/AngularPublic.js

@@ -65,6 +65,7 @@
   $FilterProvider,
   $InterpolateProvider,
   $IntervalProvider,
+  $$HashMapProvider,
   $HttpProvider,
   $HttpBackendProvider,
   $LocationProvider,
@@ -241,6 +242,7 @@ function publishExternalAPI(angular) {
         $$rAF: $$RAFProvider,
         $$asyncCallback: $$AsyncCallbackProvider,
         $$jqLite: $$jqLiteProvider,
+        $$HashMap: $$HashMapProvider,
         $$cookieReader: $$CookieReaderProvider
       });
     }

src/apis.js

@@ -73,3 +73,9 @@ HashMap.prototype = {
     return value;
   }
 };
+
+var $$HashMapProvider = [function() {
+  this.$get = [function() {
+    return HashMap;
+  }];
+}];