feat: added local settings

src/LicenseModel/LicenseModel.cpp

@@ -151,15 +151,15 @@ bool LicenseModel::prepareDatabase()
 
 void LicenseModel::addClient(const LicenseItem &item)
 {
-
+    m_data.append(item);
 }
 
-void LicenseModel::deleteClient(const LicenseItem &item)
+void LicenseModel::deleteClient(int index)
 {
-
+    m_data.removeAt(index);
 }
 
-void LicenseModel::editClient(const LicenseItem &item)
+void LicenseModel::editClient(const LicenseItem &item, int index)
 {
-
+    m_data[index] = item;
 }