feat: Working purchase order table and form.

Sources/App/Controllers/ViewController.swift

@@ -6,6 +6,7 @@ struct ViewController: RouteCollection {
 
   private let api = ApiController()
   private let employees = EmployeeViewController()
+  private let purchaseOrders = PurchaseOrderViewController()
   private let users = UserViewController()
   private let vendors = VendorViewController()
 
@@ -25,6 +26,7 @@ struct ViewController: RouteCollection {
     protected.post("logout", use: logout(req:))
     // protected.get("users", use: users(req:))
     try routes.register(collection: employees)
+    try routes.register(collection: purchaseOrders)
     try routes.register(collection: users)
     try routes.register(collection: vendors)
   }