mstipy User guide

New Features

The documentation now includes a user guide covering many aspects of msticpy
It includes the following sections:

• Getting started section (Installation and configuration)
• Data Acquisition (querying and data)
• Data Enrichment (GeoIP, Threat Intel)
• Data Analysis (IoC extraction, decoding, clustering
• Visualization (Event timeline, Process tree, Mapping, widgets)

Documentation is on ReadTheDocs

Fixes

• Broken links and outdated docs updated
• Fixes to some unit tests