Moved undo and redo into tool settings and implemented it for fog

src/components/map/controls/UndoButton.js

@@ -0,0 +1,14 @@
+import React from "react";
+import { IconButton } from "theme-ui";
+
+import UndoIcon from "../../../icons/UndoIcon";
+
+function UndoButton({ onClick, disabled }) {
+  return (
+    <IconButton onClick={onClick} disabled={disabled}>
+      <UndoIcon />
+    </IconButton>
+  );
+}
+
+export default UndoButton;