Julien Kohler 3ea0b09863
Add possibility to define custom code for cooling (#579)
These changes allow to define custom code to be run when using the cooldown preset.

Here an example in the configuration:
```
[preheat cooldown]
gcode: M107
```
2022-04-11 08:25:07 -03:00
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2020-08-01 14:38:09 -04:00
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