Include estimated minimum and maximum score in result

In order to make the automatic calculation of of Xi values on the frontend we need to know how the model estimates the range of the score function.

A new entry should be added to the result payload in the openapi spec. E.g., under `result.results.models.score_bounds`
Should be added around here: https://github.com/BoostV/process-optimizer-api/blob/5c321f960b42f38c576c7f2e47c3799ca2eba726/optimizerapi/openapi/specification.yml#L204