Create CMS editor component/ widget to upload files

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

Hi guys, in https://axway-open-docs.netlify.app/ project we're looking foward for the ability to upload files, specially script samples (JSON, YAML, SQL etc) via the CMS editor.

The issue today is that, when a CMS contributor (https://axway-open-docs.netlify.app/) needs to upload a file, they have to ask a Technical writer to do it. It would make the work more seamless if the contributor could upload the file themselves while updating the page.

**Describe the solution you'd like**

Please add a widget to upload files.


**Describe alternatives you've considered**

We don't have any. The contributors have to contact us, sometimes via email, Teams, or any other channel, and ask to upload the files to them.