[Feature Request] Grouping and expandable/collapsible areas for “Saved Views”

Description Description of the problem: The saved views in Paperless-ngx are a great feature for quickly accessing frequently used filters and search queries. However, with a large number of saved views, the list in the menu quickly becomes confusing, especially when Paperless-ngx is used for different companies, subject areas, or departments. Suggested solution: It would be very helpful if saved views could be organized into groups that can be expanded and collapsed in the menu. This would allow many views to be displayed in a structured way without the menu appearing cluttered. > Company A ├─ Incoming invoices ├─ Outgoing invoices ├─ Contracts ├─ Bank documents ├─ Offers └─ Correspondence > Company B ├─ Incoming invoices ├─ Outgoing invoices ├─ Personnel documents ├─ Tax documents └─ Contracts > Vehicle fleet ├─ Insurance ├─ Fuel receipts ├─ Repair bills ├─ Vehicle registration documents └─ Leasing contracts > Private ├…