feat: Add in some helpers for the properties

lib/properties/index.ts

@@ -0,0 +1,27 @@
+import { ExpectedExports, PackagePropertiesV2 } from "../types";
+import "../util/extensions";
+import { Properties } from "./Properties";
+export { Properties } from "./Properties";
+export { PropertyObject } from "./PropertyObject";
+export { PropertyString } from "./PropertyString";
+
+export const test = "";
+export type UnionToIntersection<T> = ((x: T) => any) extends (x: infer R) => any
+  ? R
+  : never;
+
+/**
+ * This is used during creating the type of properties fn in the service package.
+ * This fn makes sure that the return type is correct and everything is infered to
+ * reduce the types that the user has to make.
+ * @param fn
+ * @returns
+ */
+export function setupPropertiesExport(
+  fn: (
+    ...args: Parameters<ExpectedExports.properties>
+  ) => Promise<Properties<PackagePropertiesV2>>
+): ExpectedExports.properties {
+  return (...args: Parameters<ExpectedExports.properties>) =>
+    fn(...args).then((x) => x.build());
+}