move files to locations describing their function

gui/scripts/pages/popup.js

@@ -0,0 +1,22 @@
+/* Popup.js
+  Build the interface for popup
+*/
+
+// Import modules.
+import windowman from "../windowman.js";
+let secretariat = await import(chrome.runtime.getURL("scripts/secretariat.js"));
+
+function start() {
+  windowman.prepare();
+}
+/* Populate the strings on the page. */
+function say(element) {
+  // document.title
+}
+
+function main() {
+  let tab = start();
+  say(tab);
+}
+
+main();