Menu & config
menu.* (alias config.*) declares the knobs on the script's card in the menu. Declare
params at the top level of the script - they register when the script loads, appear on the
card, and their values are exposed to the script as globals named by key.
menu.group()
menu.slider(, , , , , )
menu.toggle(, , )
menu.keybind(, , )
menu.dropdown(, , {,,}, )
menu.pixels(, )