feat: add chrome extension

extension/popup.js

@@ -0,0 +1,23 @@
+import { getShortifyData } from "./common.js";
+
+const saveButton = document.body.querySelector("#save-button");
+const domainInput = document.body.querySelector("#domain-input");
+
+saveButton.addEventListener("click", () => {
+  chrome.storage.local.set({
+    shortify: {
+      domain: domainInput.value,
+    },
+  });
+});
+
+(async () => {
+  try {
+    const shortifyData = await getShortifyData();
+    if (shortifyData) {
+      domainInput.value = shortifyData.domain;
+    }
+  } catch (error) {
+    // do nothing.
+  }
+})();