chore: add missing import

Author: paodb

src/main/java/com/flowingcode/vaadin/addons/twincolgrid/TwinColGrid.java

@@ -41,6 +41,7 @@
 import com.vaadin.flow.component.textfield.TextField;
 import com.vaadin.flow.data.provider.DataProvider;
 import com.vaadin.flow.data.provider.ListDataProvider;
+import com.vaadin.flow.data.provider.Query;
 import com.vaadin.flow.data.renderer.TextRenderer;
 import com.vaadin.flow.data.selection.SelectionListener;
 import com.vaadin.flow.data.value.ValueChangeMode;