Add gradient aware pacing

Now that we have setup the basics, let's add gradient aware pacing.

Basically just change the power based on gradient.
If road is flat use 100% of the power, if climbing goes higher if downhill less power.

Downhill less than -5% 85%
-5% to -1% 90%
-1% to 1% 100%
1 to 3 102%
3 to 6 107%
More than 6 110%

In the CLI pls also print power per segment and avg power on the top