Sorting files inside object storages and FS mounts

### Background

As the `Object storages` and `FS mounts` could store lots of files, for the fast access and search through them it would be helpful to have the ability to sort files inside storages and mounts.

The system shall allow users to sort files inside object storages and FS mounts:
- sorting could be performed by the file **Name**, **Size** or **Date changed**
- sorting UI could be similar to the sorting of cluster nodes at the "**Cluster state**" page
- sorting style shall be saved while users surf between different folders in storage or switch pages (if storage has more than one page)
- folders in storage shall be grouped and sorted separately from files