Enhance knowledge right bar for malware to malware relationships

[SamuelHassine]

Use case

Malware to Malware can be "variants / uses / drops".

Currently, in the right bar, only variants is displayed / possible.

[romain-filigran]

STIX 2.1 also describe relations : "uses", "downloads", "controls" between Malware https://docs.oasis-open.org/cti/stix/v2.1/os/stix-v2.1-os.html#_wete2ohmtz4y

[nino-filigran]