title: How to give config property to a view Item in Extjs 6?
body: <p>In Extjs 6 how to assign a config property directly to a view either through binding or direct assignment?</p>
  
  <pre><code>Ext.define('App.view.main.Main', {
  extend: 'Ext.Container',
  
  config: {
      btnLabel: 'MyButton'
  },
  
  someOtherProperty:'xyz',
  
  items: [{
      xtype:'button',
  
      //text:this.someOtherProperty,
      //text:this.btnLabel,
      //text:this.getBtnLabel(),
  
      //here accessing this throws error, while loading this refers to windows object and not the class... 
      width:'150px'
      }],
  });
  </code></pre>
  
  <p>i can move the property to ViewModel and access it but my question is this, can't we assign the class level property to its child component?</p>