Add Alerter.js options to phet-types.d.ts, see phetsims/greenhouse-effect#97

Author: jessegreenberg

eslint/.eslintrc.js

@@ -1040,6 +1040,7 @@ module.exports = {
     SoundGeneratorOptions: 'readonly',
     PathOptions: 'readonly',
     ColorDef: 'readonly',
-    ScreenViewOptions: 'readonly'
+    ScreenViewOptions: 'readonly',
+    AlerterOptions: 'readonly'
   }
 };

phet-types.d.ts

@@ -315,4 +315,10 @@ type CheckboxOptions = {} & _NodeOptions;
 type QSMType = {
   getAll: ( a: any ) => any
 };
+
+type AlerterOptions = {
+  alertToVoicing?: boolean;
+  descriptionAlertNode?: any;
+};
+
 declare var QueryStringMachine: QSMType;