Add back WITH_UV_ATLAS compile option

### Checklist

- [x] I have searched for [similar issues](https://github.com/isl-org/Open3D/issues).
- [x] For Python issues, I have tested with the [latest development wheel](https://www.open3d.org/docs/latest/getting_started.html#development-version-pip).
- [x] I have checked the [release documentation](https://www.open3d.org/docs/release/) and the [latest documentation](https://www.open3d.org/docs/latest/) (for `main` branch).

### Proposed new feature or change

I would love to get an optional flag to compile out UVAtlas, similar to https://github.com/isl-org/Open3D/commit/5c55a75788e070a9017705cbe0723c875ae09e15.

Reason being is that the project has been archived https://github.com/microsoft/UVAtlas and i don't use those features. I would rather not use deprecated dependencies, especially ones i don't need anyway. Thank you for the consideration.

### References

Original implementation: https://github.com/isl-org/Open3D/commit/5c55a75788e070a9017705cbe0723c875ae09e15

### Additional information

_No response_