Added event handling support to VisNetwork and enhanced component documentation

src/myfasthtml/controls/InstancesDebugger.py

@@ -1,5 +1,6 @@
 from myfasthtml.controls.Panel import Panel
 from myfasthtml.controls.VisNetwork import VisNetwork
+from myfasthtml.core.commands import LambdaCommand
 from myfasthtml.core.instances import SingleInstance, InstancesManager
 from myfasthtml.core.network_utils import from_parent_child_list
 
@@ -11,7 +12,8 @@ class InstancesDebugger(SingleInstance):
   
   def render(self):
     nodes, edges = self._get_nodes_and_edges()
-    vis_network = VisNetwork(self, nodes=nodes, edges=edges, _id="-vis")
+    c = LambdaCommand(lambda event_data: print("received", event_data))
+    vis_network = VisNetwork(self, nodes=nodes, edges=edges, _id="-vis", events_handlers={"select_node": c})
     return self._panel.set_main(vis_network)
   
   def _get_nodes_and_edges(self):