feat: reveal password toggle for login form

addresses #869cqrw6w

assets/controllers/password_reveal_controller.js

@@ -0,0 +1,11 @@
+import { Controller } from '@hotwired/stimulus'
+
+export default class extends Controller {
+
+    static targets = [ 'field' ]
+
+    toggle() {
+        let type = this.fieldTarget.getAttribute('type') === 'password' ? 'text' : 'password'
+        this.fieldTarget.setAttribute('type', type)
+    }
+}