Refactroing the mena-curvature flow.

examples/mean-curvature-flow/tnl-mean-curvature-flow-eoc.h

examples/mean-curvature-flow/tnl-mean-curvature-flow.h

src/matrices/tnlSparseMatrixRow.h

src/matrices/tnlSparseMatrixRow_impl.h

src/mesh/grids/tnlTraverser_Grid1D_impl.h

src/mesh/grids/tnlTraverser_Grid2D_impl.h

src/mesh/grids/tnlTraverser_Grid3D_impl.h

...ar-diffusion-operators/tnlFiniteVolumeNonlinearOperator.h

...ffusion-operators/tnlFiniteVolumeNonlinearOperator_impl.h

...ear-diffusion-operators/tnlOneSideDiffNonlinearOperator.h

...iffusion-operators/tnlOneSideDiffNonlinearOperator_impl.h

src/operators/diffusion/tnlNonlinearDiffusion.h

src/operators/diffusion/tnlNonlinearDiffusion_impl.h

src/problems/tnlMeanCurvatureFlowProblem_impl.h

src/solvers/linear/krylov/tnlGMRESSolver_impl.h

src/solvers/tnlBuildConfigTags.h