Updates the default parameter values for the Negative Rejection Steering
implementation to improve usability and user experience.
## Changes
- **Skew**: 4.0 → 2.00
- **Stretch**: 2.0 → 5.00
- **Squash**: 0.0 → 0.75
These new defaults (2/5/0.75) provide a better starting point for users,
as documented in the updated README.
## Files Modified
- `NRS/nodes_NRS.py`: Updated default values in INPUT_TYPES
- `scripts/negative_rejection_steering_script.py`: Updated default
initialization values
- `README.md`: Updated beginner how-to guide to reference the new
defaults
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Signed-off-by: Reithan <bo122081@hotmail.com>