Save/load files to and from cloud platforms

[hschwentner]

Is your feature request related to a problem? Please describe.
Currently the Modeler allows files only to be saved and loaded from the device the browser is running on.

Describe the solution you'd like
Alternatively to the device I would like to save and load files to Google Drive, Dropbox, OneDrive, GitHub, and the like.

*Additional context
Draw.io has a feature that is very similar. Maybe their solution could be used.

[hofstef]

I see some similarity to #68 . I guess the difference would that with #68, the files are shared with anyone who has the link whereas with #84 the file is uploaded to a personal cloud storage (requires authentication).

[almereyda]

Common cloud storage providers for this use case are:

• Google Drive
• Nextcloud (WebDAV)
• Apple iCloud
• Box

It would even be imaginable to integrate the App into Nextcloud similar to their Draw.io integration.

Less common, but certainly possible storage providers could be:

• Remote Storage
• Solid

Involving OIDC, a token service and a lambda/daemon to generate pre-signed URLs, it would also be possible to integrate with S3.