Add a plugin which can provide a list of config names
>>> [!note] Migrated issue
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Reported by: [phenaproxima](https://www.drupal.org/user/205645)
Related to !569
>>>
<h3 id="summary-problem-motivation">Problem/Motivation</h3>
<p>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.</p>
<h3 id="summary-proposed-resolution">Proposed resolution</h3>
<p>Add an <code>eca_list_config</code> plugin to <code>eca_config</code>, which calls <code>ConfigFactory::listAll()</code> (with an optional prefix) and stores the resulting list in a token.</p>
issue