Added Statistics calculation

Statistics now show calculated values

node_modules/@mui/x-date-pickers/esm/internals/hooks/useNullablePickerContext.js

@@ -0,0 +1,10 @@
+'use client';
+
+import * as React from 'react';
+import { PickerContext } from "../../hooks/usePickerContext.js";
+
+/**
+ * Returns the context passed by the Picker wrapping the current component.
+ * If the context is not found, returns `null`.
+ */
+export const useNullablePickerContext = () => React.useContext(PickerContext);