Refactor: Change cmake names and library names

This refactoring makes ModuleMapGraph suitable for integration into larger projects by avoiding naming conflicts.

Changes:

• Renamed CMake options to use MMG_ prefix:

  • USE_MPI -> MMG_USE_MPI
  • USE_CUDA -> MMG_USE_CUDA
  • USE_CUDA_LAUNCH_BOUNDS -> MMG_USE_CUDA_LAUNCH_BOUNDS
  • WITH_NUMPY_EXPORT -> MMG_WITH_NUMPY_EXPORT
  • WITH_PYTORCH_EXPORT -> MMG_WITH_PYTORCH_EXPORT

• Renamed all shared libraries to include ModuleMapGraph prefix:

  • libMMG.so -> libModuleMapGraphMMG.so
  • libHits.so -> libModuleMapGraphHits.so
  • libParticles.so -> libModuleMapGraphParticles.so
  • libModuleMap.so -> libModuleMapGraphModuleMap.so
  • libGraph.so -> libModuleMapGraphGraph.so
  • libGPU.so -> libModuleMapGraphGPU.so
  • libMPI.so -> libModuleMapGraphMPI.so
  • libCuPyGraphBuilder.so -> libModuleMapGraphCuPyGraphBuilder.so
  • libCuPyEdgeLayerConnector.so -> libModuleMapGraphCuPyEdgeLayerConnector.so

• Updated all source files, headers, and build scripts to use new names

All changes are minimal and backwards compatible through CMake aliasing (ModuleMapGraph::CPU, ModuleMapGraph::GPU still work).