Fix apollographql#5160

This splits part of the work from apollographql#5255 to make it easier to merge.
This covers improvements and fixes to the query planner cache key from changes related to the query hashing algorithm and query plan reuse during warmup.

Fixed:
* use prefixes for each part of the redis cache key so they become self describing
* remove the custom Hash implementation for the cache key
* remove JSON serialization
* hash the Rust planner's config only once, not on every cache query

Co-authored-by: Ivan Goncharov <[email protected]>
Co-authored-by: Jeremy Lempereur <[email protected]>
Co-authored-by: Gary Pennington <[email protected]>
Co-authored-by: Jesse Rosenberger <[email protected]>
Co-authored-by: Renée <[email protected]>