[Simulator] Added a timeline simulation to the SerialSim class.

This timeline simulates all the events handled by the control module.
Added real-time display of sensor data on the experiment timeline tab.

4 labels display the values acquired by the 3 temperature sensors and the pressure probe.
The data is updated in real-time with the latest values from downlink.

Added the 'interface.h' file to define some interface strings.

Updated the code accordingly in the heater and table tabs.