* 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
* window: use const references instead of copies
use const references instead of wasteful copies and make the = operator
check for self assignment and return early. also use const in all the
other operators.
* listener: pass std::function as const reference
instead of copies pass the std::functions as const references.
* config: dont unnecessarily convert to c_str
getHyprlangConfigValuePtr wants an std::string and we already have an
std::string, dont convert it to a c_str only for it to be converted back
to an std::string.
* buffer: pass attributes as const reference
pass attributes as const reference instead of copies.
synchronous buffers are read instantly and we can release them, but asynchronous ones have to be locked until they are unref'd from .current to avoid reading from a buffer after .release()
