Add param sub_sphere to tracking_local_dev

[arnaudbore]

Quick description

Add option sub_sphere

...

Type of change

Check the relevant options.

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

Provide data, screenshots, command line to test (if relevant)

Using data from pytest

Checklist

• [x] My code follows the style guidelines of this project (run autopep8)
• [ ] I added relevant citations to scripts, modules and functions docstrings and descriptions
• [x] I have performed a self-review of my code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [x] I moved all functions from the script file (except the argparser and main) to scilpy modules
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] New and existing unit tests pass locally with my changes

[codecov[bot]]

Codecov Report

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

Project coverage is 68.11%. Comparing base (7e09bd9) to head (4a6bc7e).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #987 +/- ## ========================================== + Coverage 68.07% 68.11% +0.03% ========================================== Files 419 419 Lines 21577 21578 +1 Branches 3245 3245 ========================================== + Hits 14688 14697 +9 + Misses 5601 5591 -10 - Partials 1288 1290 +2 ``` | [Components](https://app.codecov.io/gh/scilus/scilpy/pull/987/components?src=pr&el=components&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=scilus) | Coverage Δ | | |---|---|---| | [Scripts](https://app.codecov.io/gh/scilus/scilpy/pull/987/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=scilus) | `68.95% <100.00%> (-0.02%)` | :arrow_down: | | [Library](https://app.codecov.io/gh/scilus/scilpy/pull/987/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=scilus) | `66.83% <100.00%> (+0.11%)` | :arrow_up: |