add custom fields to frontmatter

[nosovk]

In our MD we use additional frontmatter filelds.
like:

description: Some text
yearOfManufacture: 2014
typeOfCertification: EU only

Unfortunately when we try to edit our MD's with Wiki.JS there is no way to see those additional frontmatter fields. Also, when we update page in wikijs - those fields removed from original MD.

It would be nice to have a proper way of working with frontmatter.

[celsobessa]

Same use case for me. I would appreciate this feature as well.