[State sync experiment] Building dictionary for state file compression (#2721)

* Kasai experiments

* Use divsufsort instead of standard lib

* Refactor experiments, split dictionary building into chunks

* Fixes

* Estimate compression, sample

* More stats

* Parallelise

* Fix lint

* dictionary aggregator

* Actual replacement

* Fixes, separate dictionary processing

* Test file

* More correct dictionary, decompression

* Use dynamic programming to reduce dictionary

Co-authored-by: Alexey Sharp <alexeysharp@Alexeys-iMac.local>
Co-authored-by: Alex Sharp <alexsharp@Alexs-MacBook-Pro.local>