added 2nd thread to handle lcm message, to prevent battery info delay

[sxy-sun]

What's new:

• Multithreading: One thread now handles screen updates, while another manages LCM message processing.
• This change addresses the issue of LCM message delays.

Previously, both lc.handle() and screen updates were executed within the same loop. As a result, screen update delays could block the handling of new messages. By decoupling these processes, we ensure timely message handling and smoother operation.

18

[sxy-sun]

Working on adding more cases:

1. Battery = -1 means no message received -> Display ???
2. Battery in (3.5, 5.5) means the barrel plug is unplugged - > Display Control Board Not Powered
3. Battery in (6, 7) means the jumper cap is on 6 V -> Display Moter Volt: XXX V
4. Battery in (7, 12) means the jumper cap is on 12 V -> Display the voltage and flash the screen when it drops below 9 V
5. 10 seconds without new analog message -> set battery = -1 and display ???
6. Battery in (0, 1.5) means no jumper cap > Display "No Jumper Cap"

[sxy-sun]

Cases listed above are all done and tested.