Store tracking method to EmissionData

[benoit-cty]

Is your feature request related to a problem? Please describe.

We display tracking method:

                RAM Tracking Method: RAM power estimation model
                CPU Tracking Method: cpu_load
                GPU Tracking Method: Unspecified

See

codecarbon/codecarbon/core/resource_tracker.py

Line 265 in adea1aa

CPU Tracking Method: {self.cpu_tracker}

But we did not expose it to the interface.

Describe the solution you'd like

• Store them in EmissionData
• Send them to the API in the Experiment