Convert docstrings to NumPy style

[dhruvildarji]

Summary

• Converts all docstrings in the core gym environment files from Google-style (Args:/Returns:) to NumPy-style (Parameters/Returns with underline separators)
• Covers all 6 core source files: f110_env.py, base_classes.py, dynamic_models.py, laser_models.py, collision_models.py, rendering.py
• No functional code changes — only docstring formatting

Closes #156

Files changed

File	Description
f110_env.py	F110Env class (main gym environment)
base_classes.py	RaceCar and Simulator classes
dynamic_models.py	Vehicle dynamics functions (accl_constraints, steering_constraint, vehicle_dynamics_ks, vehicle_dynamics_st, pid)
laser_models.py	Scan simulation (ScanSimulator2D, ray tracing, iTTC checks)
collision_models.py	GJK collision detection (collision, collision_multiple, get_vertices)
rendering.py	EnvRenderer class (pyglet rendering)

Example

Before (Google style):

def reset(self, pose):
    """
    Resets the vehicle to a pose

        Args:
            pose (np.ndarray (3, )): pose to reset the vehicle to

        Returns:
            None
    """

After (NumPy style):

def reset(self, pose):
    """
    Resets the vehicle to a pose

    Parameters
    ----------
    pose : np.ndarray (3,)
        Pose to reset the vehicle to [x, y, theta].
    """

Test plan

• Verify no functional code changes (only docstring formatting)
• Spot-check converted docstrings for correctness