Improve related resource listing for teams

[juliushaertl]

From nextcloud/server#42433

Related resources for listing teams and the related resources of it in individual apps

• Should list teams that this item is part of
• Should provide other resources that are part of the same team
• Prioritize larger entities (e.g. folders) over small ones (e.g. files) (The related 'files' are less important then related Talk rooms, Group-folders, Calendars,... So the files should be on the bottom. You can see the problem in our Engineering room)
• Requires mockup based on existing related resources

• Call it team resources and other resources
• @marcoambrosini will check for a sidebar mockup