LateNight: add effect chain menu button

[ronso0]

[Holzhaus]

LGTM, thank you. I think it might be worth considering to use a selector like the quickeffect combobox in the mixer section, at least if we want to make it usable with a controller. But no need to block this IMHO.

[ronso0]

Hmm, this is easier said than done because it's not only a list but also contains submenus.
I think for controller access we should rather add a control to open/close the menu, then use [Library],MoveUp/Down/Vertical to navigate and [Library],GoToItem to select. This works well for the track menu already.

[Holzhaus]

Yes, we could consider that. But it's not crucial for 2.4.0 IMHO. In any case, we can merge this now.

[Be-ing]

controller access we should rather add a control to open/close the menu

The only feature from this menu I intended to be used from controllers is loading presets that already exist, which there already is a ControlObject for. I suppose you could add a CO to save a new preset... but then you have to move your hands from the controller to type the name in the dialog box anyway, so I don't think it would be worth it.