EVM Storage: Visalize cost

[aakoshh]

Part of https://github.com/filecoin-project/ref-fvm/issues/859 Depends on https://github.com/filecoin-project/ref-fvm/issues/888

Create scripts to visualize the data in the different test scenarios. The rendered images can be checked in so they are visible in the PRs when we evaluate improvements to the data structures.

~The script should have an entry point to turn the current .jsonline files into .base.jsonline to establish the baseline scenarios that later modifications can be compared against, then pair up the base and the new measurements into easy-to-compare charts.~ On second thought it's probably enough to rely on the Github diff to see the improvements.