Add route exports for application structure

- Created a new index.js file to export routes for Production, Inventory, Management, and Developer sections.
- This centralizes route management and enhances modularity within the application.

src/routes/index.js

@@ -0,0 +1,4 @@
+export { default as ProductionRoutes } from './ProductionRoutes'
+export { default as InventoryRoutes } from './InventoryRoutes'
+export { default as ManagementRoutes } from './ManagementRoutes'
+export { default as DeveloperRoutes } from './DeveloperRoutes'