feat: Add functionality to move inventory items to pantry and enhance pantry management

- Implemented moveInventoryItemToPantry method in InventoryRepository to facilitate moving items from inventory to pantry.
- Enhanced InventoryScreen with a new header section providing context about the inventory.
- Added a button in SwipeableInventoryTile to move items to pantry with appropriate error handling.
- Introduced movePantryItemToInventory method in PantryRepository to support moving items back to inventory.
- Refactored PantryScreen to rename _addToInventory to _moveToInventory for clarity and updated UI to reflect changes.
- Added AdminPantryItem model to represent pantry items in the admin panel.
- Created AdminPantryPanel for managing pantry items, including moving items to inventory and listing users.
- Developed AdminPrivateProductsPanel for managing private products, allowing promotion to global products.

flutter/lib/features/pantry/data/pantry_repository.dart

@@ -71,4 +71,18 @@ class PantryRepository {
       rethrow;
     }
   }
+
+  Future<void> movePantryItemToInventory(
+    int id, {
+    required Map<String, dynamic> body,
+    String? token,
+  }) async {
+    try {
+      await _api.postJson(PantryApiPaths.moveToInventory(id), body: body, token: token);
+      _logger.info('Moved pantry item with ID: $id to inventory');
+    } catch (error) {
+      _logger.severe('Failed to move pantry item to inventory: $error');
+      rethrow;
+    }
+  }
 }