✨ feat: Dynamic genesis files

[raxhvl]

Benchmarkoor depends on EEST to generate client specific genesis file via a build artifact. This PR allows dynamic generation of client specific genesis files from a "generic" format that eest generates along with fixtures.

This cuts a dependency and makes iteration quicker.

How it works

fill → pre_alloc + hive/{hash}.json → benchmarkoor → jq -f mapper.jq → client genesis → tests

1. EEST fixtures now have a file called hive/{hash}.json
2. Once per run, we download the required mappers from hive's repo for all clients
3. We then generate client specific genesis from from the generic file
4. Finally, tests are run as if we had pre-built genesis tarball

[raxhvl]

Requires jq to be installed. We also do this via docker - this allows us to pin a jq version.