docs(m365): add documentation for m365 (#7622)

Co-authored-by: Sergio Garcia <hello@mistercloudsec.com>

mkdocs.yml

@@ -102,7 +102,9 @@ nav:
           - Non In-Cluster Execution: tutorials/kubernetes/outside-cluster.md
           - Miscellaneous: tutorials/kubernetes/misc.md
       - Microsoft 365:
+          - Getting Started: tutorials/microsoft365/getting-started-m365.md
           - Authentication: tutorials/microsoft365/authentication.md
+          - Use of PowerShell: tutorials/microsoft365/use-of-powershell.md
   - Developer Guide:
       - Introduction: developer-guide/introduction.md
       - Provider: developer-guide/provider.md