Split ctests among process folders.

Applications/CLI/CMakeLists.txt

Applications/CLI/Tests.cmake

ProcessLib/GroundwaterFlow/CMakeLists.txt

ProcessLib/HT/CMakeLists.txt

ProcessLib/HeatConduction/CMakeLists.txt

ProcessLib/HydroMechanics/CMakeLists.txt

ProcessLib/LIE/HydroMechanics/CMakeLists.txt

ProcessLib/LIE/SmallDeformation/CMakeLists.txt

ProcessLib/LiquidFlow/CMakeLists.txt

ProcessLib/RichardsFlow/CMakeLists.txt

ProcessLib/SmallDeformation/CMakeLists.txt

ProcessLib/TES/CMakeLists.txt

ProcessLib/TwoPhaseFlowWithPP/CMakeLists.txt