Updated documentation

Author: geekhybrid

.github/workflows/main

@@ -92,6 +92,7 @@ export interface TreeViewItem {
   expanded?: boolean;
   disableDragAndDrop?: boolean; // Disable drag and drop for a specific node.
   disabled?: boolean;// When disabled, an item can neither be selected nor checked
+  styles?: string[]; // Add the .css styles for a given item
   meta?: any;// provides meta-data of any type per node.
 }
 ```