From now on all functions using the generalized setIPDataInitialConditions
must remove the _ip suffix in the local assembler's setIPDataInitialConditions.

 - Removing sigma and eps from IPData, now stored in current state and prev state.
 - Remove associated ip getter and setter, now handled through reflections
 - Stress, stiffness tensor, and volumetric body force are now fetched from
   newly updated constitutive data (CD).

postTimestepConcrete of local assemblers.

Pass mesh properties instead of the whole mesh.

Moving duplicate code from each process into the constructor
of the integration point writer. Also replacing the for-loop
with an algorithm.

 assembler member function.

Rename a the method from getNumberOfComponents() to getNumberOfGlobalComponents()
in class LocalToGlobalIndexMap.

Update all process' interfaces and passing the values
to local assemblers.

The fmt library happily accepts std::string without
any conversions.