Mesh config and config validator were added.

TODO

src/core/arrays/tnlStaticArray.h

src/core/arrays/tnlStaticArray1D_impl.h

src/core/arrays/tnlStaticArray2D_impl.h

src/core/arrays/tnlStaticArray3D_impl.h

src/core/arrays/tnlStaticArray_impl.h

src/mesh/CMakeLists.txt

src/mesh/config/CMakeLists.txt

src/mesh/config/tnlMeshConfigBase.h

src/mesh/config/tnlMeshConfigValidator.h

src/mesh/layers/tnlMeshStorageLayer.h

src/mesh/layers/tnlMeshSubentityStorageLayer.h

src/mesh/layers/tnlMeshSuperentityStorageLayer.h

src/mesh/tnlDimensionsTag.h

src/mesh/tnlMesh.h

src/mesh/tnlMeshEntity.h

src/mesh/tnlMeshEntityInitializer.h

src/mesh/tnlMeshEntityKey.h

src/mesh/tnlMeshInitializer.h

src/mesh/tnlMeshIntegrityChecker.h