feat: create order stubs (#65)

src/models/api/order.ts

@@ -0,0 +1,18 @@
+/* eslint-disable @typescript-eslint/no-namespace */
+import { Order } from "../landing";
+
+export namespace CreateOrder {
+  export type Response = {
+    id: Order.Id
+  };
+  export type Params = {
+    body: Order.Create
+  };
+};
+
+export namespace GetOrder {
+  export type Response = Order.View;
+  export type Params = {
+    orderId: Order.Id
+  };
+};