Add UI for volumes

[r4victor]

Similar to Runs and Fleets UI,, there should be a UI for viewing volumes:

• Project->Volumes
• Administration->Volumes

Implementation details

#1519 added API endpoint /api/volumes/list/ for listing volumes across projects that can be used for the Administration->Volumes UI. The Administration->Volumes UI can look like Administration->Runs except that it won't have a user filter (not supported by the API).

Columns: NAME PROJECT BACKEND REGION STATUS CREATED PRICE

The Project->Volumes UI can use the same /api/volumes/list/ endpoint with project filter. It doesn't need to show the PROJECT column.

Notes:

• If volume["deleted"], then show STATUS as Deleted even if volume["status"] is different.