Category autoread by guid (#8673)

* Add configuration to mark same GUID as read in category.

Implement suggestion mentioned in #8641

Changes proposed in this pull request:

- Add a configuration to the categories to automatically mark entries as read if the same GUID is present in recent entries.  

How to test the feature manually:

1. Create a category. Check the option "Mark an article as read… if an identical GUID already exists [...]"  
2. Enable debug logs, or add an extension which registers to the hook `Minz_HookType::EntryAutoRead`.  
3. Add feeds which might have the same GUID.  
  For example: https://www.reddit.com/r/technology/hot.rss, https://www.reddit.com/r/technology/rising.rss, https://www.reddit.com/r/technology/best.rss, and https://www.reddit.com/r/technology/new.rss
4. See the logs "Mark GUID as read[...]", or the effect of the extension.  

* Implement behavior to mark same GUID as read in category.

* Update documentation

* Update i18n

* Fix PHP CS report

* Fix missing argument

* Fixes

---------

Co-authored-by: Alexandre Alapetite <alexandre@alapetite.fr>

docs/fr/developers/03_Backend/05_Extensions.md

@@ -228,7 +228,7 @@ The following events are available:
 	parameter. This way a website known to have feeds which doesn’t advertise
 	it in the header can still be automatically supported.
 * `entry_auto_read` (`function(FreshRSS_Entry $entry, string $why): void`):
-	Appelé lorsqu’une entrée est automatiquement marquée comme lue. Le paramètre *why* supporte les règles {`filter`, `upon_reception`, `same_title_in_feed`}.
+	Appelé lorsqu’une entrée est automatiquement marquée comme lue. Le paramètre *why* supporte les règles {`filter`, `upon_reception`, `same_title_in_feed`, `same_guid_in_category`}.
 * `entry_auto_unread` (`function(FreshRSS_Entry $entry, string $why): void`):
 	Appelé lorsqu’une entrée est automatiquement marquée comme non-lue. Le paramètre *why* supporte les règles {`updated_article`}.
 * `entry_before_display` (`function($entry) -> Entry | null`): will be