[Feature] Add LicenseDB sync methods to SW360LicenseClient

[ADITYA-CODE-SOURCE]

Description

Add LicenseDB sync methods to SW360LicenseClient to allow programmatic access to LicenseDB import functionality

Current Behavior

SW360LicenseClient does not have methods to:

• Import licenses from LicenseDB
• Check sync status
• Test LicenseDB connection

Expected Behavior

Add the following methods to SW360LicenseClient:

• importFromLicenseDB() - Trigger license import from LicenseDB
• getLicenseDBSyncStatus() - Get current sync status
• testLicenseDBConnection() - Test connection to LicenseDB

Why This is Needed

This is part of the GSoC 2026 LicenseDB integration project. The CLI and other tools need to be able to trigger LicenseDB sync programmatically.

Versions

• Last commit id on main: 18c916a