Sort *every* file into a doxygen group.

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Took 18 seconds

Took 2 minutes

cockatrice/src/deck/deck_list_model.h

@@ -25,6 +25,8 @@ enum DeckListModelGroupCriteria
 };
 
 /**
+ * @class DecklistModelCardNode
+* @ingroup DeckModels
  * @brief Adapter node that wraps a DecklistCardNode for use in the DeckListModel tree.
  *
  * This class forwards all property accessors (name, number, provider ID, set info, etc.)
@@ -103,6 +105,8 @@ public:
 };
 
 /**
+ * @class DeckListModel
+* @ingroup DeckModels
  * @brief Qt model representing a decklist for use in views (tree/table).
  *
  * DeckListModel is a QAbstractItemModel that exposes the structure of a deck