fix: handle writeOptions when diskNameOrOptions is provided

[kamilcglr]

🔗 Linked issue

#54

❓ Type of change

• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

Fixed the moveToDisk function of the MultipartFile helper to correctly handle writeOptions when diskNameOrOptions is provided, ensuring that writeOptions are no longer ignored.
Resolves #54

📝 Checklist

• I have linked an issue or discussion.
• I have updated the documentation accordingly.

[thetutlage]

Thanks 👍