Adds playground example

Author: tywalch

www/src/pages/en/core-concepts/v3-migration.mdx

@@ -33,3 +33,5 @@ ElectroDB is changing how it generates query parameters to give more control to
 With `v3`, ElectroDB will not apply post-processing to queries of any type and abstains from adding implicit/erroneous filter expressions to queries _by default_. This change should provide additional control to users to achieve more advanced queries, but also introduces some additional complexity. There are many factors related to sorting and using comparison queries that are not intuitive, and the simplest way to mitigate this is by using additional [filter expressions](https://electrodb.dev/en/queries/filters/) to ensure the items returned will match expectations.
 
 To ease migration and adoption, I have added a new execution option called `compare`; To recreate `v2` functionality without further changes, use the execution option `{ compare: "v2" }`. This value is marked as deprecated and will be removed at a later date, but should allow users to safely upgrade to `v3` and experiment with the impact of this change on their existing data. The new `compare` option has other values that will continue to see support, however; to learn more about this new option, checkout [Comparison Queries](https://electrodb.dev/en/queries/query#comparison-queries).
+
+Checkout (this playground example)[https://electrodb.fun/?#code/PQKgBAsg9gJgpgGzARwK5wE4Es4GcA0YuccYGeqCALgUQBYCG5YA7llXWAGbZwB2MXGBDAAUKKwBbAA5QMVMAG8wAUT5V2ATzABfbhiiSwAIkRwAxlQMwARsYDc481D64FVBjYSkAvCc1QqBgA+h5ecMF8DJJwDk4ubqoyCFCaJGB+fHAsqupaABSiYEpFxWCSsIgAXCVlZfwaVJo1xirJqSTG+KV1xBgAbljmcC0Ayh5cXACC0tJdPWX9mLhYLi0AjMYLOt11DFRWWDaoVHg1igvFcgDmDHxYAF77q3wAkjDnl2VN0iMmbtg+NctnVijsvnB2mk4O9PqDvppfi0AVggSDQeD4QZvHD4WAfn8ANrGeD9Lr-firDDk4xuBiTGnSQHmLDSBgIYwAXTADCEzlcVF2GKFdToWHIMCmVFx8IJNQA5CigfKRWUdNtVaj4AAPM61UF0yYy0HSADWxvhzhkUBWpxqxJud0ezxc7y5qvhXBwCA+JjN6PhmLxuHN+rxYCtsltROMYolUppkOkKWhbs5HtBXsQvtppoDGK+6rqRd0QuUYW8ulEAEpHKJ+YlHfcnhpXTAMmB5Td1vLHA2FHG4JKFH55QAmAAMk4AtBP1rOe3W2smOnAAHRoTCaNeGrj5ZRN52tt7tnTVtfXKj7sCD4e6c-XKDXyNMP7y-pj+X3xzLlMkDfoBg267teh4ti87z3heV7KLeUpQY+z6GGy5AKvshzHKcuBfmeP5Qv+m5ATuEx7geGC3M2LonghME3uKQ7wWeF5PsoL6oZ2ppwJo2HfqIv6rgBW7EfSpFgGBVGQUxl7XnBChSU+tZAA] to see specifically how the `compare` option impacts query parameters.