[Soft Delete] - Added trash to desktop app

[cscharf]

Objective

This adds the Trash bin and soft-delete/restore functionality to the Desktop client.

Changes

• ciphers.component.html: Prevent adding a new cipher to the Trash directly
• groupings.component.html: Added Trash "folder" to top-level groupings navigation
• vault.component.html: Added vault orchestration event hooks/handlers for deleted and restored items
• vault.component.ts: Added deleted item view (trash) context tracking and state management. Also managed context menus for items in trash vs. not deleted
• view.component.html: Added delete and restore buttons

Screenshots

Added the Delete button to the View, and the Trash "folder" to the groupings navigation along with contextual changes for deleted items.

[kspearrin]

Looks good. Just one question.