Merge pull request #31176 from niyari/master

[materialize-css]Add AutoInitialization (Auto Init) function

types/materialize-css/autoinit.d.ts

@@ -0,0 +1,6 @@
+declare namespace M {
+    /**
+     * Automatically initialize components.
+     */
+    function AutoInit(context?: Element): void;
+}

types/materialize-css/index.d.ts

@@ -9,6 +9,7 @@
 
 /// <reference types="jquery" />
 /// <reference path="./autocomplete.d.ts" />
+/// <reference path="./autoinit.d.ts" />
 /// <reference path="./carousel.d.ts" />
 /// <reference path="./character-counter.d.ts" />
 /// <reference path="./chips.d.ts" />