feat(pinia-orm): Add the option to sort case insensitive with sortBy

[CodeDredd]

🔗 Linked issue

#634

❓ Type of change

• 📖 Documentation (updates to the documentation or readme)
• 🐞 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

Adding the option to sort collections case insensitive:

const userCollection = useCollect(useRepo(User).make([
    { id: 1, name: 'James', age: 40, post: { id: 1, title: 'Title1' } },
    { id: 2, name: 'john', age: 30, post: { id: 2, title: 'Title2' } },
    { id: 3, name: 'David', age: 20 },
  ])).sortBy('name', 'SORT_FLAG_CASE')

📝 Checklist

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