Make sure the buttons have a dedicated place, filling the entire height of the panel rather than only 50%. We could probably limit the size of the buttons to be the same max size as panel icons.

This enables the AppMenu by default, assuming the user will compile the widget rather than downloading a zipped .plasmoid.

• Enable Fill the Width so the "double click to maximize" is available by default.
• Enable appmenuDoNotHide so it's similar to Global Menu

Should probably also make showButtonOnlyWhenMaximized true as well, once I've also patched AWC to always keep a blank area dedicated for the buttons as it currently slides the title/menu to where the buttons were.