Intune integration: expose user fields and auto-link to People assets

Current behavior: Asset layout fields can be mapped to six Intune data points, all device-level. No user-level data is available. Requested: 1. Add these managedDevice properties as integration data points: - userPrincipalName - userDisplayName - emailAddress - enrolledDateTime - lastSyncDateTime 2. Allow Asset link fields to be integration-mapped, so a device can auto-link to the People asset whose email matches the device's userPrincipalName. Why: Device-to-user mapping is core MSP documentation. Today it requires a manual field or an external script hitting the Hudu API, which defeats the purpose of the native integration. Environment: Hudu Cloud, Microsoft Intune integration, custom "Intune Devices" asset layout.