Object members support added

[SergeyNefyodov]

Summary of the Pull Request

I added a additional Item in context menu which allows user to see methods of System.Objects class

Description:

Quality Checklist

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [ ] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings