Register user, retrieve org by id and slug and user interests refactored

[prabinoid]

What type of PR is this? (check all applicable)

• [ ] 🍕 Feature
• [x] 🐛 Bug Fix
• [ ] 📝 Documentation
• [x] 🧑‍💻 Refactor
• [ ] ✅ Test
• [ ] 🤖 Build or CI
• [ ] ❓ Other (please specify)

Describe this PR

Register user fixed. Retrieve org by id and slug made to one endpoint. User interests refactored and removed ListProjectInterestDTO.

[sonarcloud[bot]]

Quality Gate passed

Issues
3 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud