Refactored version of the ALLEGRO v03 digi+reco steering script (#204)

* Refactored version of the ALLEGRO digi+reco steering script

* fix

* reorder the code and put SW creation into function so that it can be reused for various cluster collections

* add SW and topoclusters with noise

* fix name

* fix name of clustered cells in case of noise

* do not hardcode number of ecal barrel layers

* rename alg

* rename alg

* do not add corrections/calibrations/shape parameters to ECAL+HCAL topoclusters