* cursormgr: reduce duplicated code
add a few functions such as setCursorBuffer and setAnimationTimer to
reduce duplicated code and also avoid future mishaps of forgetting to
clear buffer or disarm timer. and generally reduce spaghetti even tho
pasta can be delicious.
* xcursormgr: implent inherited themes
implent index.theme parsing and inherited themes.
* cursormgr: ensure a fallback xcursor exist
ensure a xcursor fallback exist otherwise it wont load the proper theme
if we at launch have hyprcursor enabled and then set it to false in
config and reload. also use the env var when using hyprctl setcursor
incase its empty.
* xcursor: bootleg xcursors into its own manager
implent XCursorManager and load themes based on librarypath and its
dir, now we catch all supplied theme files. and also implent animated
cursors. also refactor a bit of spaghetti regarding xcursors in
CursorManager.
* hyprcursor: fix buffer leak
animated cursors are creating a new buffer for each image, ensure we
drop the buffers so it continously doesnt build up in infinity.
* cursormgr: use eventloopmgr for animation
use EvenloopManager for timers instead of adding it directly to
m_sWLEventLoop and using its related wl_* functions.
