[Web] Add context menu to app top bar

[tbsbdr]

Description

User Stories

• As a user who is currently using an editor like collabora, I want to perform file-actions via the context menu on the file so that I dont have to switch back to the files list.

Value

• improve efficiency
• educate that the right sidebar is available in editors

Acceptance Criteria

• add context menu to app top bar, available actions:
  • Open ... (as soon as available, not part of this story)
  • Save
  • Save as ... (Open embedded web view; as soon as available, not part of this story) not a low hanging enough, thus postponed
  • Share (opens right side bar)
  • Copy Link (opens copy link quickaction dialog)
  • Download
  • Delete (close editor, which results in going back to files app parent folder) not a low hanging enough, thus postponed
  • Rename (opens dialog; replace route after rename, same as in breadcrumbs current folder rename) not a low hanging enough, thus postponed
  • Details (opens right sidebar)

Definition of ready

• Everybody needs to understand the value written in the user story
• Acceptance criteria have to be defined
• All dependencies of the user story need to be identified
• Feature should be seen from an end user perspective
• Story has to be estimated
• Story points need to be less than 20

Definition of done

• Functional requirements
  • Functionality described in the user story works
  • Acceptance criteria are fulfilled
• Quality
  • Code review happened
  • CI is green (that includes new and existing automated tests)
  • Critical code received unit tests by the developer
• Non-functional requirements
  • No sonar cloud issues

Visuals