Calculate Reproducibility score

[Vel1khan]

Devise a strategy to calculate a reproducibility score.
Initial idea: For each archive, calculate the MD5 of its constituents and compare to the reference version. Save the number of reproducible files and their respective types.. Might need to change pkey of builds table to a generated id and create a new table with entries for each filetype for build.

We can assign different weights to filetypes eg. more weight to class files vs resource files