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

Sources/App/Controllers/VendorViewController.swift

@@ -0,0 +1,20 @@
+import Fluent
+import Vapor
+
+struct VendorViewController: RouteCollection {
+  private let api = ApiController()
+
+  func boot(routes: any RoutesBuilder) throws {
+    // Do something.
+  }
+}
+
+struct VendorFormCTX: Content {
+  let vendor: Vendor?
+  let buttonLabel: String
+
+  init(vendor: Vendor? = nil, buttonLabel: String = "Create") {
+    self.vendor = vendor
+    self.buttonLabel = buttonLabel
+  }
+}