This commit introduces pinned tab persistence across sessions and integrates it with workspaces.
- **Pinned Tab Storage:**
- Implements a database-based storage system for pinned tabs using PlacesUtils.
- Provides methods for saving, retrieving, deleting, and managing pinned tabs.
- Tracks changes to pinned tabs for efficient updates.
- **Workspace Integration:**
- Allows pinned tabs to be associated with specific workspaces.
- Synchronizes pinned tabs with the active workspace.
- Ensures that pinned tabs are not inadvertently moved between workspaces.
