Fix/489 auto enum value allowed chars

[fabien-michel]

Use regex to replace invalid characters in auto generated enums.

This occur because django's choice values are strings and can contain any chars.

Exemple This

class Choice(models.TextChoices):
   EN_US = "en-US", "English"

Choice.choices return (("en-US", "English"),), and hyphen is not a valid char for GraphQL naming convention. So it would fail. The PR replace non valid chars to _.

Types of Changes

• [ ] Core
• [x] Bugfix
• [ ] New feature
• [ ] Enhancement/optimization
• [ ] Documentation

Issues Fixed or Closed by This PR

• 489

• 493

Checklist

• [x] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [ ] I have read the CONTRIBUTING document.
• [x] I have added tests to cover my changes.
• [x] I have tested the changes and verified that they work and don't break anything (as well as I can manage).

[codecov-commenter]

Codecov Report

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

Project coverage is 87.98%. Comparing base (fc23726) to head (dcae186).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #494 +/- ## ========================================== + Coverage 87.95% 87.98% +0.03% ========================================== Files 37 37 Lines 3172 3180 +8 ========================================== + Hits 2790 2798 +8 Misses 382 382 ```

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