Add comprehensive Office 365 assessment toolkit and related documentation

- Introduced Office 365 Cloud Shell Assessment with primary scripts:
  - Get-QuickO365Report.ps1: Fast assessment with auto ZIP download.
  - Get-ComprehensiveO365Report.ps1: Full-featured assessment with advanced options.
  - Analyze-O365Reports.ps1: Post-assessment analysis and insights generation.

- Added detailed documentation for each script, including usage examples and output formats.

- Created Get-ComprehensiveTeamsReport.md for Teams infrastructure assessment.

- Added Start-IntuneEnrollment.md for Intune device enrollment management.

- Updated _Sidebar.md to include links to new Teams and Intune scripts.

- Enhanced home.md with sections for Microsoft Teams Assessments and Intune Management.

- Implemented Get-IntuneAppPolicies.ps1 to retrieve and export Intune App Protection Policies.

Author: WFord26