feat: add support for app url variables (#915)

* feat: add support for app url variables

* fix: test not working

* fix: format issue

packages/common/src/app-url/server.ts

@@ -0,0 +1,8 @@
+import { headers } from "next/headers";
+
+import { extractBaseUrlFromHeaders } from "../url";
+import { parseAppHrefWithVariables } from "./base";
+
+export const parseAppHrefWithVariablesServer = <TInput extends string | null>(url: TInput): TInput => {
+  return parseAppHrefWithVariables(url, extractBaseUrlFromHeaders(headers()));
+};