project settings: adopt layout used in organization and target settings

Let's adopt the new style with tabs on the side.

Current projects

<img width="772" height="665" alt="Image" src="https://github.com/user-attachments/assets/65f50f6c-c06a-419a-a9c2-feee2e98a3bb" />

vs current target

<img width="840" height="675" alt="Image" src="https://github.com/user-attachments/assets/b476d38d-9829-4fa1-b5a2-5d949a7a0da3" />


