ENGCOM-1547: Move buttons definition to separate file #15194

 - Merge Pull Request #15194 from jissereitsma/magento2:issue-form-button-provider
 - Merged commits:
   1. 85a47d9
   2. 0dee82a
   3. baa36da
   4. 196ee86
   5. 130223e
   6. 99ee323

Author: magento-engcom-team

app/code/Magento/Ui/view/base/web/js/form/adapter.js

@@ -8,16 +8,12 @@
  */
 define([
     'jquery',
-    'underscore'
-], function ($, _) {
+    'underscore',
+    'Magento_Ui/js/form/adapter/buttons'
+], function ($, _, buttons) {
     'use strict';
 
-    var buttons = {
-            'reset':            '#reset',
-            'save':             '#save',
-            'saveAndContinue':  '#save_and_continue'
-        },
-        selectorPrefix = '',
+    var selectorPrefix = '',
         eventPrefix;
 
     /**

app/code/Magento/Ui/view/base/web/js/form/adapter/buttons.js

@@ -0,0 +1,17 @@
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+/**
+ * @api
+ */
+define(function () {
+    'use strict';
+
+    return {
+        'reset': '#reset',
+        'save': '#save',
+        'saveAndContinue': '#save_and_continue'
+    };
+});