Return a data.frame with the columns “name”, “cponame”, “category”, “subcategory”, “description”.

Categories and subcategories are:

category
subcategory
description
meta
CPO that acts on other CPOs
tools
datageneral
general data preproc
factor data preproc
numeric data preproc
feature conversion
cleanup
featurefiltergeneral
fltr CPO with operation arg
specialisedspecific feat filter CPO
imputationgeneralimp CPO with operation arg
specialised
specific imputation CPOtools
imputation
listCPO()