Parameters in the hero.clean() function to activate individual pre-processing steps

[jbesomi]

It would be cool to have parameters in the hero.clean() function to activate individual pre-processing steps instead of constructing a custom pipeline.

Proposal by @mxhofer

Notes: the solution should keep the clean function simple to read and use.

[selimelawwa]

@jbesomi Would you suggest to add a **kwargs parameter to the clean function? or add some parameters with default value?

[jbesomi]

Texthero's aim to be very simple. This enhancement would require to add many arguments to the clean function. Furthermore, in this case, the easiest solution would consist of just creating a custom pipeline: #38