feat: Begins a generic htmx form context and template, integrates user form, begins views for vendor and purchase orders.

Sources/App/Controllers/PurchaseOrderViewController.swift

@@ -0,0 +1,10 @@
+import Fluent
+import Vapor
+
+struct PurchaseOrderViewController: RouteCollection {
+  private let api = ApiController()
+
+  func boot(routes: any RoutesBuilder) throws {
+    // Do something.
+  }
+}