chore: add copyright notices to each file

Some people accidentally, mistakenly, and without any malicious intent forget to attribute code from this resource to its source. This change will hopefully assist people, so that they do not make that mistake again.

imports/waitFor/shared.lua

@@ -1,3 +1,11 @@
+--[[
+    https://github.com/overextended/ox_lib
+
+    This file is licensed under LGPL-3.0 or higher <https://www.gnu.org/licenses/lgpl-3.0.en.html>
+
+    Copyright (c) 2025 Linden <https://github.com/thelindat/fivem>
+]]
+
 ---Yields the current thread until a non-nil value is returned by the function.
 ---@generic T
 ---@param cb fun(): T?