Sweeping !1558 from master to devel: Add DIRAC command to get input metadata for an AnalysisProduction

Cc @cburr

BEGINRELEASENOTES

*ProductionManagementSystem NEW: Add dirac-ap-input-metadata command to display information about the inputs to an Analysis Production

ENDRELEASENOTES

• Change prints to gLogger
• Tidy up comments
• Add rich (for the progress bar) to the required packages?