feat: Adds api route tests. Tested user interface works as expected, still needs some work on vendors form.

Sources/App/Views/HTMXExtensions.swift

@@ -169,10 +169,12 @@ enum IDKey: CustomStringConvertible {
   }
 
   enum Vendor: CustomStringConvertible {
+    case form
     case row(id: SharedModels.Vendor.ID)
 
     var description: String {
       switch self {
+      case .form: return "form"
       case let .row(id): return "\(id)"
       }
     }