use webview instead of iframe

src/public/app/widgets/type_widgets/iframe.js

@@ -9,7 +9,7 @@ const TPL = `
         <p>Please create label with a URL address you want to embed, e.g. <code>#iframeSrc="http://www.google.com"</code></p>
     </div>
 
-    <iframe class="note-detail-iframe-content"></iframe>
+    <webview class="note-detail-iframe-content"></webview>
 </div>`;
 
 export default class IframeTypeWidget extends TypeWidget {

src/services/window.js

@@ -67,7 +67,8 @@ async function createMainWindow() {
             enableRemoteModule: true,
             nodeIntegration: true,
             contextIsolation: false,
-            spellcheck: spellcheckEnabled
+            spellcheck: spellcheckEnabled,
+            webviewTag: true
         },
         frame: optionService.getOptionBool('nativeTitleBarVisible'),
         icon: getIcon()