[Snippets] Added several new color snippets for JavaScript.

[pvictordev]

Description

• Added snippet to convert hex to rgb color
• Added snippet to convert rgb to hsl color
• Added snippet to convert hsl to rgb color

Type of Change

• ✨ New snippet
• 🛠 Improvement to an existing snippet
• 🐞 Bug fix
• 📖 Documentation update
• 🔧 Other (please describe):

Checklist

• I have tested my code and verified it works as expected.
• My code follows the style and contribution guidelines of this project.
• Comments are added where necessary for clarity.
• Documentation has been updated (if applicable).
• There are no new warnings or errors from my changes.

Related Issues

Closes #

Additional Context

Screenshots (Optional)

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