fn layouts(&mut self, wsid: usize, tagid: usize) -> &Vec<Layout> {
        self.layouts_mut(wsid, tagid)
    }
Get the layouts for the provided workspace / tag context

If the layouts for the specific workspace / tag have not
yet been set up, they will be initialized by copying
from the [`Self::available_layouts`] or [`Self::available_layouts_per_ws`].
leftwm-core/src/layouts/layout_manager.rs