title: How to get all cache data using reactjs @apollo/client v3
body: <p>Is there anyway that I can check all the cache, eg: changes within apollo for debugging.
  Something like redux store, where you can view the whole state tree.</p>
  <p>They mentioned:</p>
  <blockquote>
  <p>The cache stores the objects by ID in a flat lookup table.
  <a href="https://www.apollographql.com/docs/react/caching/cache-configuration/" rel="noreferrer">https://www.apollographql.com/docs/react/caching/cache-configuration/</a></p>
  </blockquote>
  <p>Any way to display/console the whole lookup table?</p>