Add usermode to control Wiz lights (#2595)

* Add usermode to control Wiz lights (#1)

* Fix inclusion in usermods list

Co-authored-by: Christian Schwinne <dev.aircoookie@gmail.com>

usermods/wizlights/readme.md

@@ -0,0 +1,13 @@
+# Controlling Wiz lights
+
+This usermod allows the control of [WiZ](https://www.wizconnected.com/en/consumer/) lights that are in the same network as the WLED controller.
+
+The mod takes the colors from the first few pixels and sends them to the lights.
+
+## Configuration
+
+First, enter how often the data will be sent to the lights (in ms).
+
+Then enter the IPs for the lights to be controlled, in order. There is currently a limit of 10 devices that can be controled, but that number
+can be easily changed by updating _MAX_WIZ_LIGHTS_.
+