feat: add new assets endpoints

[Mazzya]

---

name: Pull Request
about: Create a pull request to contribute to QubiPy
title: ''
labels: ''
assignees: ''

Description

Related Issue

Fixes #

Type of Change

• 🐛 Bug fix (non-breaking change that fixes an issue)
• ✨ New feature (non-breaking change that adds functionality)
• 💥 Breaking change (fix or feature with breaking changes)
• 📚 Documentation update
• 🔨 Code refactoring
• 🧪 Test updates

Testing

• All tests pass
• New tests added for changes

Checklist

• My code follows the project's style guidelines
• I have performed a self-review of my code
• I have commented my code, particularly in complex areas
• I have updated the documentation
• My changes generate no new warnings
• I have added tests that prove my fix/feature works
• All tests pass locally

Screenshots

Additional Notes