Ability to create separate areas of collections

Summary Advanced grouping function for additional sidebar appearance with spaces/areas for grouped or single collections, or allow groups (folders) to act as a separated space/area to greatly improve usability and customization options. Basic Example _No response_ Motivation Even in medium-sized projects, I have often noticed that a small visual update would greatly simplify the handling of data. The explicit issue is that collections can only be sorted into groups (folders), but not as a separate area. If collections and groups could be separated into areas, this would extremely increase the thematic distinctions and the handling of data in terms of usability and accessibility. Moreover, taking data redundancy into account, it would be possible to separate technically different data structures in this way without having to give up systemic relations. In keeping with the "single-source-of-trouth" idea, many different topics can be brought together in one system …