Adds end-to-end (e2e) tests for the following test scenarios:
* Create a new application password.
* Create an application password with an existing name.
* Revoke a single application password.
* Bulk revoke applications passwords.
Follow-up to [49109], [49276], [49562], [50001], [50367], [51463].
Props justinahinon, swissspidy, juhise, kevin940726, isabel_brison.
Fixes#54241.
git-svn-id: https://develop.svn.wordpress.org/trunk@51966 602fd350-edb4-49c9-b593-d223f7449a82
