Full fit implementation

[bregeon]

• [x] #62
• [ ] consider which distance to choose between 2 ghosts catalogs: 2D, 3D (+ diameter), 4D (+flux) ?
• [ ] study pure fit vs MCMC efficiency
• [x] #65
• [ ] try iterative fitting procedure over several beam configurations
• [x] try to implement an Uber distance as the total distance between ghosts catalogs for multiple beam configurations at a time
• [ ] optimize distance calculus and compute with numba
• [x] make a script for fitting that is able to save results to disk, and a script able to load results and plot these
• [x] clean up memory leaks during the fitting procedure so that the fit can run for a lot of time
• [ ] deeper look into possible parallelization at the core level and at the job level of the fitting procedure
• [ ] produce a grid of simulations for each beam configuration
• [ ] learn how to have the fit scan parameters of a grid of points

[bregeon]

20 for a start

[bregeon]

when using a script (not a notebook), no memory issue is observed, see #59

[bregeon]

Uber distance for multiple ghosts catalogs implemented in #62