Clients using zxdg_decoration_manager_v1::get_toplevel_decoration may
expect a receiving a zxdg_toplevel_decoration_v1::configure event to
determine the initial decoration mode, without having to go through a
zxdg_toplevel_decoration_v1::set_mode request. Hyprland was not sending
this event, resulting in unwanted decorations being drawn.
Specifically, clients using libdecor, e.g. applications using recent
GLFW, would draw GTK decorations with artefacts. This change fixes
these.
moves std::shared_ptrs to a new implementation
Advantages:
- you can dereference a weak_ptr directly. This will obviously segfault on a nullptr deref if it's expired.
- this is useful to avoid the .lock() hell where we are 100% sure the pointer _should_ be valid. (and if it isn't, it should throw.)
- weak_ptrs are still valid while the SP is being destroyed.
- reasoning: while an object (e.g. CWindow) is being destroyed, its `weak_ptr self` should be accessible (the sp is still alive, and so is CWindow), but it's not because by stl it's already expired (to prevent resurrection)
- this impl solves it differently. w_p is expired, but can still be dereferenced and used. Creating `s_p`s is not possible anymore, though.
- this is useful in destructors and callbacks.
