Geometry: Make import button an undo command.

src/View/Geometry/Table.py

@@ -185,6 +185,20 @@ class GeometryReachTableModel(PamhyrTableModel):
         self.endMoveRows()
         self.layoutChanged.emit()
 
+    def import_geometry(self, row, filename):
+        self.layoutAboutToBeChanged.emit()
+
+        self._undo.push(
+            ImportCommand(
+                self._data, row,
+                filename
+            )
+        )
+
+        self.layoutAboutToBeChanged.emit()
+        self.layoutChanged.emit()
+
+
     def duplicate(self, rows, profiles):
         self.layoutAboutToBeChanged.emit()