move copy-code.js into ui.js

data/static/js/ui.js

@@ -144,4 +144,13 @@ document.addEventListener("DOMContentLoaded", () => {
       openLightbox(belongingTo, idx);
     });
   });
+
+  // copy code blocks
+  for (let button of document.querySelectorAll(".copy-code")) {
+    button.addEventListener("click", async () => {
+      await navigator.clipboard.writeText(button.value)
+      button.textContent = "Copied!"
+      setTimeout(() => {button.textContent = "Copy"}, 1000.0)
+    })
+  };
 });