Expose SAM parameters on node

[Pixelkram]

e.g.:

mask_generator_2 = SamAutomaticMaskGenerator(
model=sam,
points_per_side=32,
pred_iou_thresh=0.86,
stability_score_thresh=0.92,
crop_n_layers=1,
crop_n_points_downscale_factor=2,
min_mask_region_area=100, # Requires open-cv to run post-processing
)

https://github.com/facebookresearch/segment-anything/blob/main/notebooks/automatic_mask_generator_example.ipynb
https://github.com/facebookresearch/segment-anything/blob/main/notebooks/predictor_example.ipynb