Add support for joint passive force sensors

[ShravanTata]

Description

Currently we do not store joint passive forces. These are available in MuJoCo.

Expected Behavior

qpassive_row = physics.named.data.qfrc_passive.axes.row
    sensor_maps['qpassive2data'] = np.array([
        row2index(row=qpassive_row, name=joint_name, single=True)
        for joint_name in joints_names
    ])

Actual Behavior

What actually happened.

Steps to Reproduce

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Environment

• FARMS version: [e.g. 1.2.3]
• Python version: [e.g. 3.8.10]
• Operating System: [e.g. Ubuntu 20.04, Windows 10, macOS 12.1]
• Hardware: [e.g. CPU specs, GPU if relevant]

Simulation Details

• Model type: [e.g. spinal cord, limb, full body]
• Simulation parameters: [duration, timestep, etc.]
• Input files: [attach if relevant]

Screenshots

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Additional Context

Add any other context about the problem here. Screenshots, plots, or simulation outputs can be helpful.