Add Extension:WikiEditor toolbar integration

[JeroenDeDauw]

https://www.mediawiki.org/wiki/Topic:Vordfbar0y535akp

var customizeToolbar = function () {
  $('#wpTextbox1').wikiEditor('addToToolbar', {
      section: 'advanced',
      group: 'insert',
      tools: {
        "Map": {
          label: 'Insert map',
          type: 'button',
          icon: '//upload.wikimedia.org/wikipedia/commons/b/b4/OOjs_UI_icon_map-ltr.svg',
          action: {
            type: 'encapsulate',
            options: {
              pre: '{{#display_map:',
              peri: "Example street 1, Berlin~'''Heading'''~Short description; optional: 2nd marker",
              post: '|fullscreen=on}}'
            }
          }
        }
      }
    });
};
    
    /* Check if view is in edit mode and that the required modules are available. Then, customize the toolbar … */
    if ( [ 'edit', 'submit' ].indexOf( mw.config.get( 'wgAction' ) ) !== -1 ) {
    mw.loader.using( 'user.options' ).then( function () {
    if ( mw.user.options.get( 'usebetatoolbar' ) == 1 ) {
      $.when(
        mw.loader.using( 'ext.wikiEditor' ), $.ready
      ).then( customizeToolbar );
    }
  } );
}

https://www.mediawiki.org/wiki/Extension:WikiEditor