feat: track DLP Compliance Policies in Data Security and Governance

[srishti-negi]

This Pull Request introduces Data Loss Prevention (DLP) compliance policy tracking and thick client protection analysis inside the Data Security & Governance telemetry module:

1. PowerShell Integration: Created get_dlp_policies.ps1 utilizing Get-DlpCompliancePolicy to fetch tenant DLP configurations.
2. Python Telemetry Service: Updated data_security_governance.py to parse DLP records, formatting workloads dynamically, and analyzing thick-client desktop app restrictions/groups.
3. UI Integration: Added the 'DLP Compliance Policies' table cards inside the CustomTkinter frame (DataSecurityGovernanceFrame) and the newly introduced Flet app dashboard (DashboardView), complete with loading, error, and refresh states.
4. CSV Exporter: Configured detailed spreadsheet export options in both UI frameworks.
5. Unit Tests: Developed test suites verifying parsing correctness, UI states, and thick client group enforcement checks.