Adding benchmarks for git domain

[tegefaulkes]

Description

This PR adds benchmarks for the git domain. Mostly to have a good point of reference when making optimisation upgrades to the DB and EFS.

NOTE: this is targeting another feature branch while it is worked on. This is blocked by the git refactoring and requires that to be merged before switching the target branch to staging and merging.

Issues Fixed

• Fixes #717
• Ref ENG-314

Tasks

• [ ] 1. Add appropriate benchmarks for git domain.

Final checklist

• [ ] Domain specific tests
• [ ] Full tests
• [ ] Updated inline-comment documentation
• [ ] Lint fixed
• [ ] Squash and rebased
• [ ] Sanity check the final build

[linear[bot]]

ENG-314 Adding benchmarks for `git` domain to `polykey`

[tegefaulkes]

Switched base over staging now that git refactoring has been merged.

[CMCDragonkai]

I feel like the suites need to be named better.

[tegefaulkes]

I think we can merge what we have so far and revisit the issue again later. This will need a quick review and I can work on merging it soon.