enhancement: add undo for hooks and detours

[gynt]

It could be useful to undo detours and hooka. Currently there is no interface for that yet.

The undo for detours and hooks is identical:

1. read hookSize bytes from the new function address. These are the original bytes.
2. copy these bytes into the original function at originalFunctionAddress. Effectively removing the jump.
3. deallocate the new function address.
4. dereference (lua_unref) the lua hook/detour function.

The interface would be:

rps.unhookCode(address)
rps.undetourCode(address)