WIP: Add avalanche like component for testing

[mattdurham]

PR Description

Which issue(s) this PR fixes

Notes to the Reviewer

PR Checklist

• CHANGELOG.md updated
• Documentation added
• Tests updated
• Config converters updated

[thampiotr]

Wrote some comments, but only now I've just realised it's WIP/draft 🤦 . Submitting them anyway as maybe they'll be useful. Sorry for the noise!

[mattdurham]

Here is an example screenshot of the dashboard.

[mattdurham]

The usage of the benchmark would be ./main metrics --name test --duration 1h --type churn --benchmarks relabel_normal_cache,relabel_large_cache, this would run a benchmark named test for an hour using the discovery source of churn and run the relabel_normal_cache and relabel_large_cache benchmarks.

[github-actions]

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