Add new file type icons

[JammingBen]

Initial Checklist

• I understand this is a user story and questions should be posted in the Community Discussions
• I searched issues and couldn’t find anything (or linked relevant results below)

User Story

As a user, I want to have good looking file type icons so that I can quickly identify file types at first glance.

User Value

UI & UX

Acceptance Criteria

• existing file type icons get replaced with new ones (see zip file down below)
• file type icons roughly match the size in the mocks in:
  • file list
  • FAB menu
  • right sidebar (next to the resource name & preview)
  • topbar in opened file editor (next to the resource name)
  • file type filter on search result page

Opencloud_Icons.zip