Add support for Druva inSync: new winget input
(ee/maintained-apps/inputs/winget/druva-insync.json), app metadata
(added entry in ee/maintained-apps/outputs/apps.json) and
platform-specific output with version, installer URL,
installer/uninstaller script refs, sha256 and upgrade_code
(ee/maintained-apps/outputs/druva-insync/windows.json). Also add
frontend icon component and mapping
(frontend/pages/SoftwarePage/components/icons/DruvaInSync.tsx and
index.ts) plus the PNG asset
(website/assets/images/app-icon-druva-insync-60x60@2x.png) so the app is
manageable and visually represented in the UI.
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**Related issue:** Resolves#43702