Ported DDSimpleMuonDigi

[kkostova16]

Ported DDSimpleMuonDigi reconstruction algorithm from DDMarlinPandora to Gaudi.

[jmcarcell]

In several places comments related to the old code can be removed, that's my general comment for now.

[tmadlener]

I would like to advocate for some modernization of parts of this since it is worked on in any case at the moment.

[andresailer]

Let's not lose the attribution to @SwathiSasikumar please.

[andresailer]

Let's not lose the attribution to @SwathiSasikumar please.

https://github.com/key4hep/k4GaudiPandora/commits/rebasedPortedAlgorithms/

[jmcarcell]

Let's not lose the attribution to @SwathiSasikumar please.

rebasedPortedAlgorithms (commits)

But here there are a lot of commits we don't need, it's all the history of DDMarlinPandora and it would refer to non-existing files in the repo. And also there are many commits about formatting here that should be squashed together. We can change authorship in a squashed commit of this PR, or Swathi and Katerina can put the @author tag inside the algorithm.

[andresailer]

Why shouldn't we keep the history of DDMarlinPandora?

[jmcarcell]

Why should we? It's a disjoint set of files that is never accessible from here and one can always go back to DDMarlinPandora. If you are wondering about a change in a file here that would never be in the history from DDMarlinPandora. And what happens if now someone changes something in DDMarlinPandora? Two versions of the history of the processor? Isn't just easy to separate the history of the processor and the algorithm?

[andresailer]

And what happens if now someone changes something in DDMarlinPandora?

Then we can see that we don't have that change in our history here, so that is an argument for keeping the history?