Frontend: Foundations for multi tenant frontend (#78815)

* Frontend: Foundations for multi tenant frontend

* improve manifest parsing for multi-tenant frontend (#78876)

* add test

* add test

* ??

* Updates

* Added cache

* test cleanup

* lint

* fix test

* fix error templates

* cleanup

* remove copy

* revert changes to list testdata

* comment cleanup

* prepare integration tests

* Remove integrety

---------

Co-authored-by: Ryan McKinley <ryantxu@gmail.com>

.gitignore

@@ -7,8 +7,6 @@ awsconfig
 /.awcache
 /dist
 /public/build
-/public/views/index.html
-/public/views/error.html
 /emails/dist
 /reports
 /e2e/tmp