Move u2f into shared authentication folder

By @pslaughter

app/assets/javascripts/authentication/mount_2fa.js

+import $ from 'jquery';
+import initU2F from './u2f';
+import U2FRegister from './u2f/register';
+
+export const mount2faAuthentication = () => {
+  // Soon this will conditionally mount a webauthn app (see https://gitlab.com/gitlab-org/gitlab/-/merge_requests/26692)
+  initU2F();
+};
+
+export const mount2faRegistration = () => {
+  // Soon this will conditionally mount a webauthn app (see https://gitlab.com/gitlab-org/gitlab/-/merge_requests/26692)
+  const u2fRegister = new U2FRegister($('#js-register-u2f'), gon.u2f);
+  u2fRegister.start();
+};

app/assets/javascripts/shared/sessions/u2f.js → app/assets/javascripts/authentication/u2f/index.js

 import $ from 'jquery';
-import U2FAuthenticate from '../../u2f/authenticate';
+import U2FAuthenticate from './authenticate';
 
 export default () => {
   if (!gon.u2f) return;
@@ -12,6 +12,6 @@ export default () => {
     document.querySelector('.js-2fa-form'),
   );
   u2fAuthenticate.start();
-  // needed in rspec
+  // needed in rspec (FakeU2fDevice)
   gl.u2fAuthenticate = u2fAuthenticate;
 };

app/assets/javascripts/pages/ldap/omniauth_callbacks/index.js

-import initU2F from '../../../shared/sessions/u2f';
+import { mount2faAuthentication } from '~/authentication/mount_2fa';
 
-document.addEventListener('DOMContentLoaded', initU2F);
+document.addEventListener('DOMContentLoaded', mount2faAuthentication);

app/assets/javascripts/pages/omniauth_callbacks/index.js

-import initU2F from '../../shared/sessions/u2f';
+import { mount2faAuthentication } from '~/authentication/mount_2fa';
 
-document.addEventListener('DOMContentLoaded', initU2F);
+document.addEventListener('DOMContentLoaded', mount2faAuthentication);

app/assets/javascripts/pages/profiles/two_factor_auths/index.js

-import $ from 'jquery';
-import U2FRegister from '~/u2f/register';
 import { parseBoolean } from '~/lib/utils/common_utils';
+import { mount2faRegistration } from '~/authentication/mount_2fa';
 
 document.addEventListener('DOMContentLoaded', () => {
   const twoFactorNode = document.querySelector('.js-two-factor-auth');
@@ -12,6 +11,5 @@ document.addEventListener('DOMContentLoaded', () => {
     if (flashAlert) flashAlert.insertAdjacentHTML('beforeend', button);
   }
 
-  const u2fRegister = new U2FRegister($('#js-register-u2f'), gon.u2f);
-  u2fRegister.start();
+  mount2faRegistration();
 });

app/assets/javascripts/pages/sessions/index.js

-import initU2F from '../../shared/sessions/u2f';
+import { mount2faAuthentication } from '~/authentication/mount_2fa';
 
-document.addEventListener('DOMContentLoaded', initU2F);
+document.addEventListener('DOMContentLoaded', mount2faAuthentication);

ee/app/assets/javascripts/pages/groups/omniauth_callbacks/index.js

-import initU2F from '~/shared/sessions/u2f';
+import { mount2faAuthentication } from '~/authentication/mount_2fa';
 
-document.addEventListener('DOMContentLoaded', initU2F);
+document.addEventListener('DOMContentLoaded', mount2faAuthentication);

spec/frontend/u2f/authenticate_spec.js → spec/frontend/authentication/u2f/authenticate_spec.js

 import $ from 'jquery';
-import U2FAuthenticate from '~/u2f/authenticate';
+import U2FAuthenticate from '~/authentication/u2f/authenticate';
 import 'vendor/u2f';
 import MockU2FDevice from './mock_u2f_device';
 

spec/frontend/u2f/register_spec.js → spec/frontend/authentication/u2f/register_spec.js

 import $ from 'jquery';
-import U2FRegister from '~/u2f/register';
+import U2FRegister from '~/authentication/u2f/register';
 import 'vendor/u2f';
 import MockU2FDevice from './mock_u2f_device';
 

spec/frontend/u2f/util_spec.js → spec/frontend/authentication/u2f/util_spec.js

-import { canInjectU2fApi } from '~/u2f/util';
+import { canInjectU2fApi } from '~/authentication/u2f/util';
 
 describe('U2F Utils', () => {
   describe('canInjectU2fApi', () => {