Exploratory PCA

[archaeothommy]

@marcodanielepellizzari : Could you provide a summary of what are the aims, the current state and do tos for this function/branch, please? Thanks!

[marcodanielepellizzari]

@marcodanielepellizzari : Could you provide a summary of what are the aims, the current state and do tos for this function/branch, please? Thanks!

The util can be useful, the pca_report was considered out of scope for the package as we intended it. With the group we started working on a set of useful graphs, during the weekend I may have some time to put together what we did (the idea was to have a way to use your function to present isochrones in graphs, in particular the 3d graph.
So to do list would be:

1. wrap up functions for custom graphs for lead isothopes
2. build wrapper for clustering algorithm
3. for lead calculate a report that gives a list of closer points to a specific artifact (started)
4. sum everything in a function that produces a "full report" (set of graphs and table)

Points 2 and 4 were considered out of scope at this point so we decided to pause them