Need a URL command to set all IO pins to defaults

[nielsonm236]

This request is only needed as a development test aid. I find that as I test a new release and frequently change the code type I can end up with a lot of "garbage" in the Browser Only pin timer settings. This appears to be a problem mostly in the case where a non-upgradeable HA MQTT firmware load is installed then replaced with a Browser Only code load. The HA MQTT code can over-write the Flash areas used to store Browser Timer information, and this then causes the Browser load to see random IO Timer data.

Just an annoyance in test and slows down test progress. This is a non-urgent wish list item.