FEM: Add basic FemTools module

That module will handle in the future all non-gui related features
that are currently in MechanicalAnalysis.py. It will allow easier
python scripting and greater flexibility when creating new FEM wb
features.

Signed-off-by: Przemo Firszt <przemo@firszt.eu>

src/Mod/Fem/App/CMakeLists.txt

@@ -71,6 +71,7 @@ SET(FemScripts_SRCS
     convert2TetGen.py
     ccxFrdReader.py
     ccxInpWriter.py
+    FemTools.py
     MechanicalAnalysis.ui
     MechanicalAnalysis.py
     MechanicalMaterial.ui