Allow material icon in menu

[PatelUtkarsh]

This is frequent ask: Allow user to add material icon in menu items. We have related issue #222

Related WP.org topic:

1. https://wordpress.org/support/topic/no-ability-to-add-material-icons-to-drawer-menu/#post-14987026
2. https://wordpress.org/support/topic/cant-remove-search-from-hamburger-menu/

[materialmeme]

This is important. It helps add texture and character to the website. Also, people are accustomed to icons, and the material icons are so friendly that people almost naturally want to click them. Please more of this. Thanks. And Patel is a great guy. Helped me fast and I am not even a client. Good man. Follow his work.