feat: added data model and ui for main window

src/LicenseModel/LicenseModel.h

@@ -1,8 +1,50 @@
 #ifndef LICENSEMANAGER_LICENSEMODEL_H
 #define LICENSEMANAGER_LICENSEMODEL_H
 
+#include <QAbstractTableModel>
 
-class LicenseModel {};
+class LicenseModel : public QAbstractTableModel
+{
+    Q_OBJECT
+public:
+
+    enum class Status
+    {
+        None = 0,
+        Ok,
+        DbStructError,
+        DbExistError,
+    };
+
+    struct LicenseItem
+    {
+        QString id;
+        QString city;
+        QString email;
+        QString firstName;
+        QString hardwareHash;
+        QString lastName;
+        QString patronymic;
+        QString phone;
+        QString yourCompany;
+        QString comment;
+    };
+
+    explicit LicenseModel(QObject* parent = nullptr);
+    ~LicenseModel();
+
+    int rowCount(const QModelIndex &parent = QModelIndex()) const override;
+    int columnCount(const QModelIndex &parent = QModelIndex()) const override;
+    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
+    QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const;
+
+    Status getStatus();
+    QString getStatusText();
+
+private:
+    QList<LicenseItem> m_data;
+    QStringList m_errors;
+};
 
 
 #endif // LICENSEMANAGER_LICENSEMODEL_H