Paolina city

[gondiaz]

This city runs Paolina track extreme search algorithm over deconvoluted track. This city reads the output of beersheba city and outputs the track information per event.

In order to make the PR easier to review, I have kept esmeralda functions in its module, but they will likely be moved to components.py once the PR is accepted. I have also kept the city source function in the city module itself, but will also be moved.

The city is simple and short, essentially it implements the following steps:

• Read DECO hits (deconvoluted tracks from beersheba)
• Filter multipeak events
• Convert the DECO hits dataframe to a HitCollection
• Run Paolina algorithm
• Save track information results

It also modifies the hits_from_df function to be compatible with the current DECO dataframe format.