Add initial work on Qt frontend

src/duckstation-qt/qtutils.cpp

@@ -0,0 +1,23 @@
+#include "qtutils.h"
+#include <QtWidgets/QTableView>
+#include <algorithm>
+
+namespace QtUtils {
+
+void ResizeColumnsForTableView(QTableView* view, const std::initializer_list<int>& widths)
+{
+  const int total_width =
+    std::accumulate(widths.begin(), widths.end(), 0, [](int a, int b) { return a + std::max(b, 0); });
+
+  const int flex_width = std::max(view->width() - total_width - 2, 1);
+
+  int column_index = 0;
+  for (const int spec_width : widths)
+  {
+    const int width = spec_width < 0 ? flex_width : spec_width;
+    view->setColumnWidth(column_index, width);
+    column_index++;
+  }
+}
+
+} // namespace QtUtils