Add read status hook for entries (#8995)

- Add a new `EntriesRead` / `entries_read` hook for extensions.
- Trigger the hook when `markRead()` changes entry read/unread state for explicit entry IDs.
- Cover both the default DAO path and the SQLite/PGSQL DAO path.
- Add Minz hook tests for the new hook signature and argument passing.

## Why

Extensions can already react to favorite/bookmark changes through `EntriesFavorite`. This adds the matching read/unread hook requested in #4051 for extensions that need to collect stats or react to manual read state changes.

Closes #4051

app/Models/EntryDAOSQLite.php

@@ -164,6 +164,9 @@ class FreshRSS_EntryDAOSQLite extends FreshRSS_EntryDAO {
 				}
 			}
 			$this->pdo->commit();
+			if ($affected > 0) {
+				Minz_ExtensionManager::callHook(Minz_HookType::EntriesRead, [$ids], $is_read);
+			}
 			return $affected;
 		}
 	}