feat: Initial purchase order views, login seems to be broken though.

Sources/App/Controllers/Api/PurchaseOrderApiController.swift

@@ -28,8 +28,8 @@ struct PurchaseOrderApiController: RouteCollection {
   @Sendable
   func create(req: Request) async throws -> PurchaseOrder {
     try await purchaseOrders.create(
-      req.content.decode(PurchaseOrder.Create.self),
-      req.auth.require(User.self).id
+      req.content.decode(PurchaseOrder.CreateIntermediate.self)
+        .toCreate(createdByID: req.auth.require(User.self).id)
     )
   }