Make it possible to change L-Shape Fitting algorithm resolution parameter

[VRichardJP]

The bounding box shape estimator algorithm (L-Shape Fitting) relies on a hard coded angle_resolution parameter (delta in the original paper), which is currently set to 1 degree:

https://github.com/autowarefoundation/autoware.universe/blob/a1288448427eb9c05679ed96a2591402b238d33a/perception/shape_estimation/lib/model/bounding_box.cpp#L86

  constexpr float angle_resolution = M_PI / 180.0;

This parameter is very important, as the whole BoundingBoxShapeModel::estimate() almost varies linearly with it: on my machine, the shape estimator takes up to 50ms for only one vehicle with the default value, whereas it takes less than 15ms when the resolution is set to 3 degree (M_PI / 60.0).

Considering the impact it can have on the performance, I think it would make sense to add it to the shape_estimator parameters.

[VRichardJP]

Made obsolete by autowarefoundation/autoware.universe#1019