Add `ee_trial_banner` bundle

app/assets/javascripts/main.js

@@ -168,6 +168,7 @@ import './zen_mode';
 import './admin_email_select';
 import './application_settings';
 import './approvals';
+import './ee_trial_banner';
 import './ldap_groups_select';
 import './path_locks';
 import './weight_select';

config/webpack.config.js

@@ -36,6 +36,7 @@ var config = {
     commit_pipelines:     './commit/pipelines/pipelines_bundle.js',
     deploy_keys:          './deploy_keys/index.js',
     diff_notes:           './diff_notes/diff_notes_bundle.js',
+    ee_trial_banner:      './ee_trial_banner',
     environments:         './environments/environments_bundle.js',
     environments_folder:  './environments/folder/environments_folder_bundle.js',
     filtered_search:      './filtered_search/filtered_search_bundle.js',