This commit introduces a new plugin, MakerbotReader, which allows
Cura to open .makerbot files.
The plugin handles .makerbot files as zip archives and can currently
process `print.gcode` files found within these archives. If a
`print.jsontoolpath` file is found, a warning is displayed to you, as this specific toolpath format is not yet supported by this
reader.
The implementation follows the pattern of other readers like UFPReader,
utilizing the existing GCodeReader for parsing gcode data.
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