Built-In FTP/TFTP Server for Device Image Upload and Upgrade

NetBrain currently requires customers to rely on an external FTP or TFTP server to transfer IOS images to network devices during image upgrade workflows executed through Change Management. This enhancement would introduce a built-in FTP/TFTP service within NetBrain, allowing administrators to upload IOS images directly through the GUI and push those images to devices as part of a Change Management upgrade task, without configuring or maintaining a separate external server. This would simplify the upgrade process and reduce infrastructure dependencies, which is particularly valuable for customers operating in secure or restricted environments where introducing additional external servers is undesirable.