Implement Functionality for Upgrading from Dasharo (coreboot+UEFI) to Dasharo Pro/Enterprise (coreboot+SeaBIOS)

[pietrushnic]

Recent feedback from our user community indicates a significant interest in upgrading from Dasharo (coreboot+UEFI) to Dasharo (coreboot+SeaBIOS) Pro/Enterprise (formerly Dasharo Entry Subscription). Currently, our Dasharo Tools Suite cannot facilitate this transition. This upgrade path must be developed, tested, and integrated into the next release, likely 25.08.00.01, to meet user expectations and ensure a seamless transition.

• Create an upgrade mechanism within the Dasharo Tools Suite that allows users to transition from Dasharo (coreboot+UEFI) to Dasharo Pro/Enterprise (coreboot+SeaBIOS).
• Conduct extensive testing to ensure the upgrade process is reliable, safe, and does not compromise system integrity.
• Update all relevant documentation, including troubleshooting steps and FAQs, to guide users through the upgrade process.