Adding simple benchmark

[sfmig]

A draft PR adding a benchmarking for brainglobe atlasapi TODO

• [ ] document how to write benchmarks

Description

What is this PR

• [ ] Bug fix
• [ ] Addition of a new feature
• [ ] Other

Why is this PR needed?

What does this PR do?

References

Please reference any existing issues/PRs that relate to this PR.

How has this PR been tested?

Please explain how any new code has been tested, and how you have ensured that no existing functionality has changed.

Is this a breaking change?

If this PR breaks any existing functionality, please explain how and why.

Does this PR require an update to the documentation?

If any features have changed, or have been added. Please explain how the documentation has been updated (and link to the associated PR). See here for details.

Checklist:

• [ ] The code has been tested locally
• [ ] Tests have been added to cover all new functionality (unit & integration)
• [ ] The documentation has been updated to reflect any changes
• [ ] The code has been formatted with pre-commit

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 6 lines in your changes are missing coverage. Please review.

Project coverage is 85.22%. Comparing base (86c292c) to head (b86a6b8).

Files	Patch %	Lines
...orkflows/brainglobe_atlasapi/create_mouse_atlas.py	0.00%	6 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #115 +/- ## ========================================== - Coverage 85.83% 85.22% -0.61% ========================================== Files 17 18 +1 Lines 847 853 +6 ========================================== Hits 727 727 - Misses 120 126 +6 ```

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