Add Confirmation Dialog for Collection Deletion

[0010aor]

Description

Add a confirmation step when deleting collections to prevent accidental deletions.

Current Behavior

• Collection is deleted immediately upon clicking delete
• No confirmation step
• Potential for accidental deletions

Expected Behavior

• Show confirmation dialog before deletion
• Clear warning about the action being irreversible
• Option to cancel or confirm
• Show toast notification after successful deletion with message "Collection deleted successfully"
• Show toast notification if deletion fails with message "Error deleting collection"

Acceptance Criteria

• Confirmation dialog appears before deletion
• Dialog clearly states consequences
• Cancel button is focused by default
• Escape key closes dialog
• Clicking outside closes dialog
• Success toast appears after successful deletion (using toaster.create({ title: "Collection deleted successfully", type: "success" }))
• Error toast appears if deletion fails (using toaster.create({ title: "Error deleting collection", type: "error" }))

As reference: useCards.ts alredy uses the toaster: import { toaster } from "@/components/ui/toaster";