Implementing tnlMeshEntity and tnlMesh.

src/core/CMakeLists.txt

src/core/tnlIndexedSet.h

src/implementation/core/CMakeLists.txt

src/implementation/core/tnlIndexedSet_impl.h

src/mesh/CMakeLists.txt

src/mesh/layers/tnlMeshStorageLayer.h

src/mesh/layers/tnlMeshSuperentityStorageLayer.h

src/mesh/tnlMesh.h

src/mesh/tnlMeshEntity.h

src/mesh/traits/tnlMeshSuperentitiesTraits.h

tests/unit-tests/CMakeLists.txt

tests/unit-tests/core/CMakeLists.txt

tests/unit-tests/core/tnlListTest.cpp

tests/unit-tests/core/tnlListTester.h

tests/unit-tests/core/tnlStringTester.h

tests/unit-tests/core/tnlTupleTester.h

tests/unit-tests/mesh/tnlMeshEntityTester.h