Importing CookMate's MyCookbook Format

[dstar4138]

Before submitting this feature request I have

• Reviewed the documentation and verified that my feature request isn't already a feature.
• Reviewed the existing feature requests and my feature has not been requested.
• Checked the tasks taged issues and verified my feature is not covered

Please Describe The Problem To Be Solved
I'd like to request an additional migration format for importing recipies; CookMate's MyCookbook format. I'm submitting this feature request to see how popular a format it may be. The problem is it isn't as clean a format as the others currently implemented; I've attached [1] a partial example of the XML extracted from the MCB file from a family member's export.

There are two formats involved, XML and MCB. MCB is just a ZIP which wraps the XML and a directory called images with the full pictures in it. The XML schema is somewhat documented here [1]. In theory it should be similar to the Nextcloud migration already implemented, except that the base format is xml instead of json.

[1] - mycookbookrecipes.xml.txt
[2] - http://web.archive.org/web/20210413081805/https://cookmate.blog/my-cookbook-xml-schema/

Additional Information

• If the feature is accepted I'm willing to submit a PR to provide this feature

(I haven't taken a deeper look into the code-base but would be willing to dig a bit.)