Switch to oC web file type icons (+ add .docxf files)

[jesmrec]

.docxf format will be supported by oCIS (open-with-web), so it will be usual to find such kind of files in the lists.

We should assign it a thumbnail-placeholder that is not the default one.

TASKS

• [ ] Research (if needed)
• [ ] Create branch feature/feature_name
• [ ] Development tasks
  • [ ] Implement whatever
  • [ ] ...
• [ ] Code review and apply changes requested
• [ ] Design test plan
• [ ] QA
• [ ] Merge branch feature/feature_name into master

PR

• App
• Library (if needed)

[kulmann]

oC Web introduced an icon mapping in https://github.com/owncloud/web/pull/10037 and the icon lives here https://github.com/owncloud/web/blob/master/packages/design-system/src/assets/icons/resource-type-form-fill.svg

[michaelstingl]

Examples in screenshot:

• https://github.com/owncloud/web/pull/10037