feat(oui-select): allow options to be disabled (#165)

Author: marie-j

src/ovh-ui-angular/controllers/select.controller.js

@@ -33,6 +33,10 @@ export default class SelectController {
         });
     }
 
+    disableItems ($item) {
+        return this.countries.indexOf($item) % 2 === 1;
+    }
+
     onFocus () {
         this.onFocusCounter++;
     }