Add a plugin which can provide a list of config names
Problem/Motivation
If you want to iterate over all config entities' names, or the names of every config entity of a certain type, there's no way to do it in ECA right now.
Proposed resolution
Add an eca_list_config plugin to eca_config, which calls ConfigFactory::listAll() (with an optional prefix) and stores the resulting list in a token.
Edited by drupalbot