Add the Microsoft galaxy "Threat Matrix for Storage Services "

[cudeso]

From https://microsoft.github.io/Threat-matrix-for-storage-services/

[cvandeplas]

Raw data is located here: https://github.com/microsoft/Threat-matrix-for-storage-services/tree/main

At first sight it looks similar to the Azure Threat Research Matrix, so the tools/gen_atrm.py script might be a good source of inspiration to generate this Galaxy.

[cvandeplas]

I've raised a feature request for having some uniformity at Microsoft. :-)

[cvandeplas]

New initial galaxy/cluster added in the tools/gen_ms_tmss.py script. The script is pushed to the repo, but not the galaxy/cluster yet. There might be value in refactoring some things to merge the Microsoft Galaxies together in one microsoft namespace, although I'm not sure about the impact. What are your thoughts?

Includes also the relations to MITRE ATT&CK Attack Patterns:

[cvandeplas]

As discussed, changed the namespace to Microsoft