Support custom fields for all event types

include/ui/customattributestable.h

@@ -0,0 +1,22 @@
+#ifndef CUSTOMATTRIBUTESTABLE_H
+#define CUSTOMATTRIBUTESTABLE_H
+
+#include "event.h"
+#include <QObject>
+#include <QFrame>
+#include <QTableWidget>
+
+class CustomAttributesTable : public QFrame
+{
+public:
+    explicit CustomAttributesTable(Event *event, QWidget *parent = nullptr);
+    ~CustomAttributesTable();
+
+private:
+    Event *event;
+    QTableWidget *table;
+    void resizeVertically();
+    QMap<QString, QString> getTableFields();
+};
+
+#endif // CUSTOMATTRIBUTESTABLE_H