add purge in profile and geometry

src/View/Geometry/Table.py

@@ -246,3 +246,12 @@ class GeometryReachTableModel(PamhyrTableModel):
 
         self.layoutAboutToBeChanged.emit()
         self.layoutChanged.emit()
+
+    def purge(self):
+
+        self._undo.push(
+            PurgeCommand(
+                self._data, 24
+            )
+        )
+        self.layoutChanged.emit()