[Mandiant] Improve Connector

[NLAfiligran]

• Mandiant provides "Host command detail". We would need to import it into OpenCTI since an important data for our purple teaming (see screenshot1).
• For each campaign, there is a report describing other details of the campaign. Today, there is no link between the campaign and the report. Is it possible to have for each campaign, the related report in a kind of “correlated reports” or in the content? external reference?
• Currently, the "Analyst description/Comments" are not added when they are not already linked to a TTP. They are only added when there is a TTP linked. We would need to have all the analyst notes, even when they are not linked to a TTP (see screenshot2).