usb: unify ControlHandler+DeviceStateHandler, route all control requests to all handlers.

- Allows classes to handle vendor requests.
- Allows classes to use a single handler for multiple interfaces.
- Allows classes to access the other events (previously only `reset` was available).

embassy-usb-logger/src/lib.rs

@@ -74,7 +74,6 @@ impl<const N: usize> UsbLogger<N> {
             &mut state.config_descriptor,
             &mut state.bos_descriptor,
             &mut state.control_buf,
-            None,
         );
 
         // Create classes on the builder.