Temperature scoring doesn't work for CO2 sequestration

[MichaelTiemannOSC]

An imaginary company that can actually sequester carbon as part of their operations (net negative CO2 emissions) is not correctly scored by the tool. There are many problems:

• The concept of setting a reduction target for something we want to maximize is non-sensical
• A negative budget causes the tool to give a default score, quite the opposite of a "good" score
• Even when we allow the concept of a negative reduction ambition and a negative budget, the overshoot ratio of production/budget creates a positive rather than a negative temperature score

It would be great to have the first tool to score sequestration companies (and figure out what benchmark applies to them, if any--probably none). The right answer may be to report them not as a sector contributor, but show the absolute temperature score they might contribute (which will be very, very small, even when they process Gigatons).

@LeylaJavadova @joriscram