tc400: Display stats on agent panel

[BrianJKoopman]

It'd be great to display the TC400 stats that are in the acq process' session.data on the main panel for the agent.

session.data = {
    'timestamp': 1598626144.5365012,
    'block_name': 'turbo_output',
    'data': {
        "Drive_Voltage": 46.65,
        "Drive_Current": 3.02,
        "Drive_Power": 139.95,
        "Turbo_Power_Stage_Temp": 42,
        "Turbo_Electronics_Temp": 38,
        "Turbo_Pump_Bottom_Temp": 26,
        "Turbo_Bearing_Temp": 28,
        "Turbo_Motor_Temp": 32,
        "Rotation_Speed": 819,
        "Acceleration": 60,
        "Error_Code": "Err001",
    }
}

@mhasself, this seems relatively straight forward, and I don't mind taking this one on if you want (not having made a custom panel before). I probably won't get to it right away though.