[FeatureRequest]: #480
Description
Is your feature request related to a problem? Please describe.
There is no way to gracefully shutdown the Duet3 MB6HC and it is a concern that something could be corrupted when the power is turned off while the controller is running.
Describe the solution you propose.
Add a shutdown button to the DWC UI.
Describe alternatives you've considered
Ex. A workaround exists but it is tedius, for example...
Provide any additional context or information.
Ex. Photos, mockups, etc.