v2.5.1: Hotfix for import failure

Some minor fixes that address:

• importing msticpy without some non-default azure packages installed failed
• added more resiliency to query reader so that the whole thing does not fail if there is bad query file.
• removed initialization dependency on azure-resourcegraph in MicrosoftSentinel class.

What's Changed

• Hotfix for v2.5.1 by @ianhelle in #672

Full Changelog: v2.5.0...v2.5.1