Wrap `scipy.signal.gauss_spline` as `Op`

[PabloRoque]

Description

Wraps spicy.signal.gauss_spline as a pytensor Op

Related Issue

• [ ] Closes #
• [x] Related to https://github.com/pymc-devs/pytensor-workshop/issues/22

Checklist

• [x] Checked that the pre-commit linting/style checks pass
• [x] Included tests that prove the fix is effective or that the new feature works
• [ ] Added necessary documentation (docstrings and/or example notebooks)
• [ ] If you are a pro: each commit corresponds to a relevant logical change

Type of change

• [x] New feature / enhancement
• [ ] Bug fix
• [ ] Documentation
• [ ] Maintenance
• [ ] Other (please specify):

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📚 Documentation preview 📚: https://pytensor--1264.org.readthedocs.build/en/1264/