Added fast sweeping method

examples/CMakeLists.txt

examples/fast-sweeping/CMakeLists.txt

examples/fast-sweeping/MainBuildConfig.h

examples/fast-sweeping/fastSweepingConfig.h

examples/fast-sweeping/main.cpp

examples/fast-sweeping/main.cu

examples/fast-sweeping/main.h

examples/fast-sweeping/tnlFastSweeping.h

examples/fast-sweeping/tnlFastSweeping2D_impl.h

examples/hamilton-jacobi-parallel/main.h

.../hamilton-jacobi-parallel/tnlParallelEikonalSolver_impl.h

src/operators/godunov-eikonal/parallelGodunovEikonal.h

...operators/godunov-eikonal/parallelGodunovEikonal2D_impl.h

...operators/godunov-eikonal/parallelGodunovEikonal3D_impl.h