feature: quasarframework#980 added mdi icons support (quasarframework#1086)

Author: dexif

src/components/icon/QIcon.js

@@ -31,6 +31,9 @@ export default {
     else if (icon.startsWith('ion-') || icon.startsWith('icon-')) {
       name = `${icon}`
     }
+    else if (icon.startsWith('mdi-')) {
+      name = "mdi " + icon;
+    }
     else {
       name = 'material-icons'
       text = icon.replace(/ /g, '_')