feat: track instance copies that use links

confirm deleations when other instances link to it

Signed-off-by: Rachel Powers <508861+Ryex@users.noreply.github.com>

launcher/settings/SettingsObject.h

@@ -19,6 +19,8 @@
 #include <QMap>
 #include <QStringList>
 #include <QVariant>
+#include <QJsonDocument>
+#include <QJsonArray>
 #include <memory>
 
 class Setting;
@@ -142,6 +144,45 @@ public:
      */
     bool contains(const QString &id);
 
+    /*!
+     * \brief Sets the value of the setting with the given ID with a json list.
+     * If no setting with the given ID exists, returns false
+     * \param id The ID of the setting to change.
+     * \param value The new value of the setting.
+     */
+    bool setList(const QString &id, QVariantList value);
+    template <typename T> bool setList(const QString &id, QList<T> val)
+    {
+        QVariantList variantList;
+        variantList.reserve(val.size());
+        for (const T& v : val)
+        {
+            variantList.append(v);
+        }
+
+        return setList(id, variantList);
+    }
+
+    /**
+     * \brief Gets the value of the setting with the given ID as if it were a json list.
+     * \param id The ID of the setting to change.
+     * \return The setting's value as a QVariantList.
+     * If no setting with the given ID exists, returns an empty QVariantList.
+     */
+    QVariantList getList(const QString &id);
+    template <typename T> QList<T>  getList(const QString &id)
+    {   
+        QVariantList variantList = this->getList(id);
+
+        QList<T>TList;
+        TList.reserve(variantList.size());
+        for (const QVariant& v : variantList)
+        {
+            TList.append(v.value<T>());
+        }
+        return TList;
+    }
+
     /*!
      * \brief Reloads the settings and emit signals for changed settings
      * \return True if reloading was successful