Improve measurements logging

[samuelbles07]

Changes

Improve logging by log measurement values on a same schedule and more readable format

Example:

14:15:02.438 > CO2 = 153.00 ppm
14:15:02.438 > Temperature = 32.80 C
14:15:02.438 > Relative Humidity = 72.36
14:15:02.438 > TVOC Index = 0.0
14:15:02.438 > TVOC Raw = 33738.2
14:15:02.438 > NOx Index = 0.0
14:15:02.438 > NOx Raw = 16564.3
14:15:02.439 > [1] Atmospheric PM 1.0 = 0.67 ug/m3
14:15:02.439 > [1] Atmospheric PM 2.5 = 3.33 ug/m3
14:15:02.439 > [1] Atmospheric PM 10 = 4.17 ug/m3
14:15:02.439 > [1] Standard Particle PM 1.0 = 0.67 ug/m3
14:15:02.439 > [1] Standard Particle PM 2.5 = 3.33 ug/m3
14:15:02.439 > [1] Standard Particle PM 10 = 4.17 ug/m3
14:15:02.439 > [1] Particle Count 0.3 = 285.0
14:15:02.439 > [1] Particle Count 0.5 = 256.8
14:15:02.439 > [1] Particle Count 1.0 = 1.0
14:15:02.439 > [1] Particle Count 2.5 = 0.0
14:15:02.439 > [1] Particle Count 5.0 = 0.0
14:15:02.439 > [1] Particle Count 10 = 0.0