feat: add Polyfill that enables HTML5 drag drop support on mobile (touch) devices.

Author: ufocoder

src/SortableList.tsx

@@ -1,4 +1,5 @@
 import React, { useState, useEffect, useCallback, SyntheticEvent } from 'react'
+import './pollyfill'
 
 enum Position {
   before = 0,