Add new hairstyles to the random character generator

[RosmeryFabian]

This PR adds 10 new hairstyles to Threadbare's random character generator, expanding the visual variety of randomly generated characters while maintaining consistency with the game's existing pixel art style.

Changes:

• Designed and created 10 new hairstyles in pixel art, covering a variety of silhouettes, lengths, volumes, and hair configurations.
• Developed the hairstyles through visual research, concept art, sketching, and iterative pixel art refinement.
• Integrated the new hairstyle assets into the existing character generation system in Godot.
• Reviewed and iterated on the hairstyles in-game to improve visual clarity, consistency, and differentiation from the existing hairstyles.

Testing:

• Integrated and tested the new hairstyles in Godot.
• Reviewed their appearance in-game and made visual adjustments to ensure consistency with the existing character.

Review:
Ready for review. Feedback and suggestions for further improvements are welcome.

Co-authored-by: André Granados @andregf01

Resolves [#2293](url)

Thank you!

[KarmDK]

Hi! Take a look at this link for your PR description.
https://github.com/endlessm/threadbare/wiki/Contributing