Added createAICMETS client script

refs #5813

Added a client script to create the METS file for an AIC.  It collects AIP
information from files with an AIP uuid and contents of the AIP name, and
gets the AIP label by extracting the Dublin Core title from the AIP's METS
file.  Using that an the AIC's Dublin Core metadata, it creates the METS
file.

Updated archivematicaCommon/storageService.py to not rely on Django's ORM,
so all the client scripts that use it don't need to include Django's
settings file.  Added an extract file function to storageService that
fetches and saves a file from a Package (ie AIP)
Add MicroServiceChainLinks for AIC creation

refs #5823

Added preliminary MicroServiceChainLinks for AIC creation, and other
necessary client scripts.  Currently does not allow for metadata entry.
Updated createAICMETS for new paths.