feat: Support for user roles

[LobeTia]

🔗 Linked issue

24

❓ Type of change

• [ ] 📖 Documentation (updates to the documentation, readme or JSdoc annotations)
• [ ] 🐞 Bug fix (a non-breaking change that fixes an issue)
• [ ] 👌 Enhancement (improving an existing functionality like performance)
• [X] ✨ New feature (a non-breaking change that adds functionality)
• [ ] 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• [ ] ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

Added a role column on the user table Added a function future-proof the check to user roles Session includes the user role Admin portal reject unauthorised users

📝 Checklist

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

🎨 Design

[TheJoin95]

Looking good as first iteration