Cura 5.x.x Functionality update

[racerty1]

@bigtreetech Any updates on getting this patched properly and updated in the official files drop?

The other Cura 5.0 issue thread has a "working" version listed in the comments but could still use some tweaking, such as
-saving directly as "BTT format" to SD without having to jump through the navigation panes
-and a "save successful" prompt when completed,
-as well as the "eject prompt" after saving.