c0f001ab

Using the new `typed-hpack` branch

This requires a number of changes to the definitions, which have also been split
apart.
Time to Start Worker time Duration Time to finish
Config 0s 1s 1s 2s
Eval 3s 7s 7s 10s
Build 11s 1m25s 4m02s 4m13s
Suite 0s 1m35s 4m12s 4m13s