Add Archival Information Collections

AICs are a special type of AIP that only contains a METS that contains information on each of the AIPs that are part of the AIC. 

An AIC is created by selecting some AIPs from the Archival Storage tab, entering the Dublin Core metadata, and a SIP is created.  Several new MicroServices added, notably createAICMETS.  

Supported by storage service changes artefactual/archivematica-storage-service#2