Get the CSS and statuc stuff to work

webserver/static/javascript/show_password.js

@@ -0,0 +1,22 @@
+const showPasswordButtons = document.getElementsByClassName(
+  "show_password_toggle",
+);
+
+for (const button of showPasswordButtons) {
+  button.addEventListener("click", function () {
+    const input = this.parentElement.querySelector(
+      "input[type='password'], input[type='text']",
+    );
+    if (!input) return;
+    const isHidden = input.type === "password";
+    input.type = isHidden ? "text" : "password";
+
+    if (isHidden) {
+      this.classList.add("open");
+      this.classList.remove("closed");
+    } else {
+      this.classList.remove("open");
+      this.classList.add("closed");
+    }
+  });
+}