Command line applications should be translated to Python

[SimonRit]

This is the current list of command line applications (crosse-out ones have been / should be removed):

• rtkadmmtotalvariation
• rtkadmmwavelets
• rtkamsterdamshroud
• rtkbackprojections
• rtkbioscangeometry
• rtkcheckimagequality
• rtkconjugategradient
• rtkdigisensgeometry
• rtkdrawgeometricphantom
• rtkdrawshepploganphantom
• rtkdualenergyforwardmodel
• rtkdualenergysimplexdecomposition
• rtkelektasynergygeometry
• rtkextractphasesignal
• rtkextractshroudsignal
• rtkfdk
• rtkfdktwodweights
• rtkfieldofview
• rtkforwardprojections
• rtkfourdconjugategradient
• rtkfourdfdk
• rtkfourdrooster
• rtkfourdsart
• rtkgaincorrection
• rtki0estimation
• rtkimagxgeometry
• rtkiterativefdk
• rtklagcorrection
• rtklastdimensionl0gradientdenoising
• rtklut
• rtkmaskcollimation
• rtkmcrooster
• rtkmotioncompensatedfourdconjugategradient
• rtkorageometry
• rtkosem
• rtkoverlayphaseandshroud
• rtkparkershortscanweighting
• rtkprojectgeometricphantom
• rtkprojectionmatrix
• rtkprojections
• rtkprojectshepploganphantom
• rtkrabbitct
• rtkramp
• rtkrayboxintersection
• rtkrayellipsoidintersection
• rtkrayquadricintersection
• rtkregularizedconjugategradient
• rtksart
• rtkscatterglarecorrection
• rtksimulatedgeometry
• rtkspectraldenoiseprojections
• rtkspectralforwardmodel
• rtkspectralonestep
• rtkspectralrooster
• rtkspectralsimplexdecomposition
• rtksubselect
• rtktotalnuclearvariationdenoising
• rtktotalvariationdenoising
• rtktutorialapplication
• rtkvarianobigeometry
• rtkvarianprobeamgeometry
• rtkvectorconjugategradient
• rtkwangdisplaceddetectorweighting
• rtkwarpedbackprojectsequence
• rtkwarpedforwardprojectsequence
• rtkwaveletsdenoising
• rtkxradgeometry

[SimonRit]

There's only rtkprojectionmatrix left but there it's WIP in #879, closing.