Add images for the reporting tutorial

[victorgarcia98]

This PR adds 4 images: one for the headroom sensor and 3 for the profit sensors for the process under the three different policies.

[Flix6x]

Ah, much better :) ..

One small note for your consideration: it might be more intuitive to a reader to see the chart showing costs rather than losses. In the sense that a consumption process is expected to cost something, but not lead to a loss. It's just a matter of making the example click to a first-time reader. I feel the underlying reporter is named correctly, but we could consider renaming these sensors to "Costs (Breakable)", etc.