Summarize the bug (e.g., "Segmentation Fault for Colored Point Cloud Registration")

### 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).

### Describe the issue

No implemented core inside open3d package when working on Python


I'm following instructions from this tutorial:
https://www.open3d.org/docs/release/tutorial/core/tensor.html

### Steps to reproduce the bug

```python
import open3d.core as o3d
```

### Error message

Import "open3d.core" could not be resolvedPylance[reportMissingImports](https://github.com/microsoft/pyright/blob/main/docs/configuration.md#reportMissingImports)

### Expected behavior

_No response_

### Open3D, Python and System information

```markdown
- Operating system: Ubuntu 20.04 / macOS 10.15 / Windows 10 64-bit
- Python version: Python 3.8 / output from `import sys; print(sys.version)`
- Open3D version: output from python: `print(open3d.__version__)`
- System architecture: x86 / arm64 / apple-silicon / jetson / rpi
- Is this a remote workstation?: yes or no
- How did you install Open3D?: pip / conda / build from source
- Compiler version (if built from source): gcc 7.5 / clang 7.0
```

### Additional information

_No response_