* surfacerole: add virtual destructor
all classes that will be derived from should have a virtual destructor
otherwise deleting an instance via pointer to a base class is undefined
behaviour, layershell/xdgshell hits this with std::default_delete in the
new sharedptr implentation.
* includes: fix missing includes
fix missing includes for no precompiled headers builds, and remove a
redefiniton of a macro already defined in macros.hpp
* notifications: free cairo images on destruction
asan reports a leak on exit if we dont free the image we created in the
draw function. add a destructor and free images on exit.
* compositor: destroy wlroots types on exit
there are a few types not being destroyed on exit and causing a leak on
exit in wlroots reported by asan, add those.
* cursormgr: ensure we destroy cursor mgr on exit
add a destructor and call wlr_xcursor_manager_destroy on the manager on
destruction, leak reported by asan.
* keybindmgr: free state and keymap
add missing keymap_unref on creation, and add a destructor and free the
state on exit. leak reported by asan.
* skeyboard: add destructor and free state
free the state on destruction of keyboard, reported as leak by asan
