Streamlining MAC installation

[ondrejkrejci]

• The MAC installation is really cumbersome, see here: https://github.com/Probe-Particle/ppafm/wiki/Install-ppafm#mac . The Conda env is easy, but the change of compiler in the Makefile is strange - should we change the Makefile to be more like the PPSTM one? so one can just do "make Mall" and it will automatically use clang++-22
• The OpenCL is running on the M CPU, but running well and reasonably fast for simple gui. However the FF.cl file need adjustment of the path, which I do not know how to tell to the OpenCL compiler otherwise. I will try to find a way.