feat(checkbox): templateOptions.disabled

Author: Kamil Kisiela

src/types/checkbox/checkbox.js

@@ -3,6 +3,18 @@ import template from './checkbox.html';
 export default (formlyConfigProvider) => {
   formlyConfigProvider.setType({
     template,
-    name: 'checkbox'
+    name: 'checkbox',
+    defaultOptions: {
+      ngModelAttrs: {
+        disabled: {
+          bound: 'ng-disabled'
+        }
+      }
+    },
+    apiCheck: (check) => ({
+      templateOptions: {
+        disabled: check.bool.optional
+      }
+    })
   });
 };