Save and load image entries in Cantor worksheet file format
This feature allows Cantor to finally save and load image entries in/from Cantor worksheet format.
Currently Cantor only save the
Path for image entries, so it is not a good solution both for sharing worksheets and for mid/long-term local file management.
This patch allows Cantor to save the file images inside the worksheet and, after load a worksheet, the images are saved in a temporary folder and loaded inside the worksheet.
The merge request is just to get some feedback and work in the refactoring of
Path tag and the respective
m_imagePath logic in the changed classes. I will leave the tag there but, if the worksheet has the new
FileName tag, I will provide a way to use that instead
Path to load the image entries.