integarting admin dashboard

public/Dashboard/vendors/tinymce/plugins/hr/index.js

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+// Exports the "hr" plugin for usage with module loaders
+// Usage:
+//   CommonJS:
+//     require('tinymce/plugins/hr')
+//   ES2015:
+//     import 'tinymce/plugins/hr'
+require('./plugin.js');

public/Dashboard/vendors/tinymce/plugins/hr/plugin.js

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+/**
+ * Copyright (c) Tiny Technologies, Inc. All rights reserved.
+ * Licensed under the LGPL or a commercial license.
+ * For LGPL see License.txt in the project root for license information.
+ * For commercial licenses see https://www.tiny.cloud/
+ *
+ * Version: 5.7.0 (2021-02-10)
+ */
+(function () {
+    'use strict';
+
+    var global = tinymce.util.Tools.resolve('tinymce.PluginManager');
+
+    var register = function (editor) {
+      editor.addCommand('InsertHorizontalRule', function () {
+        editor.execCommand('mceInsertContent', false, '<hr />');
+      });
+    };
+
+    var register$1 = function (editor) {
+      editor.ui.registry.addButton('hr', {
+        icon: 'horizontal-rule',
+        tooltip: 'Horizontal line',
+        onAction: function () {
+          return editor.execCommand('InsertHorizontalRule');
+        }
+      });
+      editor.ui.registry.addMenuItem('hr', {
+        icon: 'horizontal-rule',
+        text: 'Horizontal line',
+        onAction: function () {
+          return editor.execCommand('InsertHorizontalRule');
+        }
+      });
+    };
+
+    function Plugin () {
+      global.add('hr', function (editor) {
+        register(editor);
+        register$1(editor);
+      });
+    }
+
+    Plugin();
+
+}());

public/Dashboard/vendors/tinymce/plugins/hr/plugin.min.js

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+/**
+ * Copyright (c) Tiny Technologies, Inc. All rights reserved.
+ * Licensed under the LGPL or a commercial license.
+ * For LGPL see License.txt in the project root for license information.
+ * For commercial licenses see https://www.tiny.cloud/
+ *
+ * Version: 5.7.0 (2021-02-10)
+ */
+!function(){"use strict";var n=tinymce.util.Tools.resolve("tinymce.PluginManager");n.add("hr",function(n){var o,t;(o=n).addCommand("InsertHorizontalRule",function(){o.execCommand("mceInsertContent",!1,"<hr />")}),(t=n).ui.registry.addButton("hr",{icon:"horizontal-rule",tooltip:"Horizontal line",onAction:function(){return t.execCommand("InsertHorizontalRule")}}),t.ui.registry.addMenuItem("hr",{icon:"horizontal-rule",text:"Horizontal line",onAction:function(){return t.execCommand("InsertHorizontalRule")}})})}();