Add Persistence Baseline

[jacobbieker]

Pull Request

Description

Adds persistence baseline to the validation metrics.

Fixes #143

How Has This Been Tested?

Unit tests

• [x] Yes

Checklist:

• [x] My code follows OCF's coding style guidelines
• [x] I have performed a self-review of my own code
• [x] I have made corresponding changes to the documentation
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] I have checked my code and corrected any misspellings

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 57.14%. Comparing base (5ce274a) to head (5d97d1f).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #144 +/- ## ========================================== + Coverage 56.97% 57.14% +0.16% ========================================== Files 28 28 Lines 1799 1806 +7 ========================================== + Hits 1025 1032 +7 Misses 774 774 ```

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