Add `when` condition for keybinds

[midrare]

It'd be useful to have a way to get the current active profile as a when condition for keybinds. The use case is to have a single keybind that toggles or cycles through profiles depending on which one is currently active. I propose:

• hidefiles.active: true if any profile is active else false
• hidefiles.activeProfile: a string set to the profile name e.g. "Default" or "" if no profile is active