[ENHANCEMENT] Add beep once nozzle reaches temperature during nozzle change.

[n8many]

Printer model

• MK3S/+
• MK3
• MK2.5S
• MK2.5

Describe the enhancement

When doing many printer operations with user interaction, the printer beeps when it is ready for the user to do something. However, it does not beep when the nozzle is at 280C and ready to be changed.

Expected functionality

Once the printer reaches 280C, it will beep to alert the user that the nozzle is ready to be changed. This could either be a one time beep (as with filament unload) or a repeating beep (as with a filament change).

[3d-gussner]

@n8many Thanks for the suggestion, it is a good idea.