Add support for built-in constant `NaN`

[Luna-Klatzer]

What type of change does this PR perform?

• [ ] Info or documentation change (Non-breaking change that updates repo info files (e.g. README.md, CONTRIBUTING.md, etc.) or online documentation)
• [ ] Website (Change that changes the design or functionality of the websites or docs)
• [ ] Development or internal changes (These changes do not add new features or fix bugs, but update the code in other ways)
• [ ] Bug fix (Non-breaking change which fixes an issue)
• [x] New feature (Non-breaking change which adds functionality)
• [ ] Breaking change (Major bug fix or feature that would cause existing functionality not to work as expected.)
• [ ] Requires a documentation update, as it changes language or compiler behaviour

Summary

Added support for built-in support NaN, which simply represents NaN in the JavaScript and TypeScript target.

Closes #671

Detailed Changelog

Not present for website/docs changes

Added

• Implemented constant NaN, which represents the NaN value in JavaScript (Not a Number). (#671)

Does this PR create new warnings?

None.

Linked issues or PRs

• [x] #671

[codecov[bot]]

Codecov Report

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

Project coverage is 83.98%. Comparing base (9117107) to head (0c1b89d).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## dev-next #676 +/- ## ============================================ + Coverage 83.92% 83.98% +0.05% ============================================ Files 270 270 Lines 4499 4502 +3 Branches 478 479 +1 ============================================ + Hits 3776 3781 +5 Misses 582 582 + Partials 141 139 -2 ```

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