This PR pushes some changes from our internal RAI fork of Isaac Lab.

The 2 main changes are:

#### Adds a new `ray_alignment` parameter to replace the previous
`yaw_only` arg.

Now the ray alignment can be aligned to `world`, `yaw`, or `base.

#### Improves drift height sampling

At the moment, the `RayCasterCfg` hosts a parameter called
`drift_range`. It allows to randomize the position of the sensor in
world frame, which comes with a couple of downsides:
* If the projection is done along the gravity vector, the z-component
drift term cannot be visualized (it is implicitly given in the pose, and
added to the height scan in the observation term).
* The perturbation is applied in world frame, i.e., if the ray cast is
yaw aligned, then the drift varies with the yaw angle
* The drift is applied to all (x,y,z) components equally

This PR adds a new parameter ray_cast_drift_range. It gives more freedom
in choosing the drift ranges as x, y and z components can be treated
separately. It also applies the drift after projecting and rotating the
ray cast points, i.e. the drift is now invariant under the yaw angle and
the drift in z is can be visualized

I've added Fabian Jenelten and Jeonghwan Kim to this PR as they worked
on these changes within RAI - I'm simply helping to push them up 😄

## Type of change

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applicable. -->

- New feature (non-breaking change which adds functionality)
- Breaking change (fix or feature that would cause existing
functionality to not work as expected)

## Checklist

- [x] I have run the [`pre-commit` checks](https://pre-commit.com/) with
`./isaaclab.sh --format`
- [x] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [ ] I have updated the changelog and the corresponding version in the
extension's `config/extension.toml` file
- [ ] I have added my name to the `CONTRIBUTORS.md` or my name already
exists there

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Signed-off-by: ooctipus <zhengyuz@nvidia.com>
Co-authored-by: ooctipus <zhengyuz@nvidia.com>