add flag_supported_class to usbh_devices

remove all ATTR_WEAK in init,open,isr,close driver functions of USBH-CLASS API
- prefer testing

tests/test/host/test_enum_task.c

@@ -256,6 +256,7 @@ void test_enum_parse_config_desc(void)
   usbh_enumeration_task();
 
   TEST_ASSERT_EQUAL(desc_configuration.configuration.bNumInterfaces, usbh_devices[1].interface_count);
+  TEST_ASSERT_EQUAL(TUSB_CLASS_FLAG_HID, usbh_devices[1].flag_supported_class); // TODO change later
 }
 
 void test_enum_set_configure(void)