Lux Meter UI and real-time light measurement

[Yugesh-Kumar-S]

Description:

This issue aims to implement the Lux Meter UI in the PSLab Flutter app by porting the corresponding feature from the PSLab Android app. The Lux Meter should display real-time ambient light intensity readings using the device's built-in light sensor.

Objectives:

• Maintain consistency with the existing PSLab Android app's Lux Meter behavior and visual design.

• Display real-time light intensity (in lux) with an interactive and visually clear gauge and chart.

• Integrate continuous sensor data streaming with a dynamic UI that reflects changes instantly.

• Ensure accurate scaling and smooth transition of sensor values.