6272bf2f

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 1s 1s 1s 2s
Eval 3s 6s 6s 10s
Build 11s 1m18s 1m23s 1m34s
Suite 1s 1m27s 1m32s 1m34s