feat(passkeys): Add postAddPasskey email

Because:

* We want to send a security notification to users when a passkey is added to their account

This commit:

* Add a new email footer partial with action items if the new passkey is unexpected
* Add new email template
* Sets up email send when passkey registration is successful

Closes #FXA-13367

Author: vpomerleau

libs/accounts/email-renderer/gruntfile.js

@@ -39,6 +39,7 @@
         'src/partials/automatedEmailRecoveryKey/en.ftl',
         'src/partials/automatedEmailResetPassword/en.ftl',
         'src/partials/automatedEmailResetPasswordTwoFactor/en.ftl',
+        'src/partials/automatedEmailSignIn/en.ftl',
         'src/partials/bannerWarning/en.ftl',
         'src/partials/brandMessaging/en.ftl',
         'src/partials/button/en.ftl',
@@ -81,6 +82,7 @@
         'src/templates/passwordResetWithRecoveryKeyPrompt/en.ftl',
         'src/templates/postAddAccountRecovery/en.ftl',
         'src/templates/postAddLinkedAccount/en.ftl',
+        'src/templates/postAddPasskey/en.ftl',
         'src/templates/postAddRecoveryPhone/en.ftl',
         'src/templates/postAddTwoStepAuthentication/en.ftl',
         'src/templates/postChangeAccountRecovery/en.ftl',

libs/accounts/email-renderer/src/partials/automatedEmailSignIn/en.ftl

@@ -0,0 +1,3 @@
+automated-email-sign-in = This is an automated email; if you did not authorize this action, then please <a data-l10n-name="securitySettingsLink">review your account security settings</a>.
+  For more information, please visit <a data-l10n-name="supportLink">{ -brand-mozilla } Support</a>.
+automated-email-sign-in-plaintext = If you did not authorize this action, please review your account security settings at:

libs/accounts/email-renderer/src/partials/automatedEmailSignIn/index.mjml

@@ -0,0 +1,16 @@
+<%# This Source Code Form is subject to the terms of the Mozilla Public
+  # License, v. 2.0. If a copy of the MPL was not distributed with this
+  # file, You can obtain one at http://mozilla.org/MPL/2.0/. %>
+
+<mj-section>
+  <mj-column>
+    <mj-text css-class="text-footer-automatedEmail">
+      <span data-l10n-id="automated-email-sign-in">
+        This is an automated email; if you did not authorize this action, then please
+        <a class="link-blue" href="<%- securitySettingsLink %>" data-l10n-name="securitySettingsLink">review your account security settings</a>.
+        For more information, please visit
+        <a class="link-blue" href="<%- reviewActivitySupportUrl %>" data-l10n-name="supportLink">Mozilla Support</a>.
+      </span>
+    </mj-text>
+  </mj-column>
+</mj-section>

libs/accounts/email-renderer/src/partials/automatedEmailSignIn/index.stories.ts

@@ -0,0 +1,27 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+import { Meta } from '@storybook/html';
+import { storyWithProps } from '../../storybook-email';
+import { includes } from '../mocks';
+
+export default {
+  title: 'Partials/footers/automatedEmailSignIn',
+} as Meta;
+
+const createStory = storyWithProps(
+  '_storybook',
+  'This partial is used in footers for automated emails where signing in to review account security settings is recommended.',
+  {
+    layout: null,
+    subject: 'N/A',
+    partial: 'automatedEmailSignIn',
+    securitySettingsLink: 'http://localhost:3030/settings#security',
+    reviewActivitySupportUrl:
+      'https://support.mozilla.org/kb/review-mozilla-account-activity-and-protect-data',
+  },
+  includes
+);
+
+export const AutomatedEmailSignIn = createStory();

libs/accounts/email-renderer/src/partials/automatedEmailSignIn/index.ts

@@ -0,0 +1,8 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+export type TemplateData = {
+  securitySettingsLink: string;
+  reviewActivitySupportUrl: string;
+};

libs/accounts/email-renderer/src/partials/automatedEmailSignIn/index.txt

@@ -0,0 +1,5 @@
+automated-email-sign-in-plaintext = "If you did not authorize this action, please review your account security settings at:"
+<%- securitySettingsLink %>
+
+automated-email-support-plaintext = "For more info, visit Mozilla Support:"
+<%- reviewActivitySupportUrl %>