Initial value of input_boolean configured in UI

[OToussaint]

Hello,

I migrated all my input_boolean from yaml to ui and the initial value is missing.
My proposal:

Initial value : 〇 on ⦿ off

It is critical to have that as half of my input_boolean are defined as "on" at startup but the default is "off".

P.S. : Or a toggle, which is probably more coherent with the UI.