Please add more placeholder for klipper, moonraker, mainsail

[cromartic]

Is your feature request related to a problem? Please describe. When I upload the gcode from Bambu Studio to Mainsail, then there are some metadata missing. You can see this in line 1 in the picture.

• Layer Height
• Nozzle Diameter
• Filament Name
• Filament Type
• Filament Usage
• Filament Weight
• Print Time
• Extruder Temp.
• Bed Temp.

Most of them are missing, because they are at the beginning of the gcode, but they are expected at the end.

Then i put following to the Machine end G-code, you can see the results in line 2 of the picture.

; nozzle_diameter = {nozzle_diameter[0]}
; filament_settings_id = {filament_settings_id[0]}
; filament_type = {filament_type[0]}
; first_layer_temperature = {first_layer_temperature[0]}
; first_layer_bed_temperature = {first_layer_bed_temperature[0]} 

But the following placeholder are not working:

; layer_height = {layer_height[0]}
; filament used [mm] = {filament used [mm][0]}
; total filament used [g] = {total filament used [g][0]}
; estimated printing time (normal mode) = {estimated printing time (normal mode)[0]}

In line 3 of the picture you can see the full metadata from Prusa Slicer.

Describe the solution you'd like

Please adopt these settings automatically when you change the G-Code type to Klipper. Included:

; layer_height = {layer_height[0]}
; filament used [mm] = {filament used [mm][0]}
; total filament used [g] = {total filament used [g][0]}
; estimated printing time (normal mode) = {estimated printing time (normal mode)[0]}

Describe alternatives you've considered

Please add placeholders for:

; layer_height = {layer_height[0]}
; filament used [mm] = {filament used [mm][0]}
; total filament used [g] = {total filament used [g][0]}
; estimated printing time (normal mode) = {estimated printing time (normal mode)[0]}

Additional context

[XunZhangBambu]

@cromartic Hi , the issue addressed in this PR #3090 is similar to the one you raised.

[cromartic]

@XunZhangBambu Hi, yes it is similar, but the placeholder are expected at the end, after the main gcode.