Reorganization - moved examples into src

CMakeLists.txt

src/CMakeLists.txt

src/Examples/CMakeLists.txt

src/Examples/heat-equation/CMakeLists.txt

src/Examples/heat-equation/HeatEquationBuildConfigTag.h

src/Examples/heat-equation/tnl-heat-equation-eoc.cpp

src/Examples/heat-equation/tnl-heat-equation-eoc.cu

src/Examples/heat-equation/tnl-heat-equation-eoc.h

src/Examples/heat-equation/tnl-heat-equation.cpp

src/Examples/heat-equation/tnl-heat-equation.cu

src/Examples/heat-equation/tnl-heat-equation.h

src/Examples/heat-equation/tnl-run-heat-equation

src/Examples/heat-equation/tnl-run-heat-equation-eoc-test

src/Examples/inviscid-flow/CMakeLists.txt

...xamples/inviscid-flow/CompressibleConservativeVariables.h

src/Examples/inviscid-flow/LaxFridrichs.h

src/Examples/inviscid-flow/LaxFridrichsContinuity.h

src/Examples/inviscid-flow/LaxFridrichsEnergy.h

src/Examples/inviscid-flow/LaxFridrichsMomentumBase.h

src/Examples/inviscid-flow/LaxFridrichsMomentumX.h