Implement `core::Tensor::Dot` and `core::Tensor::Cross` (for size `{2}` and `{3}` tensors)

### 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](http://www.open3d.org/docs/latest/getting_started.html#development-version-pip).
- [X] I have checked the [release documentation](http://www.open3d.org/docs/release/) and the [latest documentation](http://www.open3d.org/docs/latest/) (for `master` branch).

### Proposed new feature or change

I am aware of the existing methods such as `core::linalg::kernel::cross_3x1` and `core::linalg::kernel::dot_3x1` that work on arrays. The tensor dot product for singleton tensors and cross product for tensors of shape `{2}` and `{3}` would be very useful.

### References

_No response_

### Additional information

_No response_