IL - Simple Mermaid Form Toggle (Patreon)

I know Expanded Mermaids has this function, but also has a lot of other functions that makes it a too much of a complicated mod for my tastes (I like to keep things simple)... this is the only function I wanted, so I made a simple toggle ON/OFF to hide or show the Mermaid form in water:

Works like the Celebrity Walkstyle one, must be used on land.