Depends on D19328. Ref T13120. Ref T12414.

Prior work has left us with just a NAME transaction here, which is straightforward to modularize.

• Created and renamed devices.
• Tried to set no name, a bad name, a duplicate name (got errors).
• Tried to create/rename into a namespace I could not edit (got an error).
• Grepped for AlmanacDeviceTransaction::.