Improve the meta-data module

[infogm]

Is your feature request related to a problem? Please describe.

I need to export my photo for my agence, with some IPCT's field. But I can't do il with Darktable. I need to use Gimp or XnView... but it is really unconfortable. Why? My process is : I upload my pics with DT in raw, I make some modifications (crops, lightness, and so) and I export them in jpg... Then I modidy the IPCT in Gimp in jpg format. If I want to go back to the RAW, I loose all the IPTC information...

Describe the solution you'd like

I would like to have a full and configurable meta-data module, and to do all my job in DT.

Alternatives

For the moment the alternative is to use several software.

Additional context

[github-actions]

This issue has been marked as stale due to inactivity for the last 60 days. It will be automatically closed in 300 days if no update occurs. Please check if the master branch has fixed it and report again or close the issue.