Add biomass boiler to add_carbon_capture function and update outputs.

[jonathan-peel]

Changes proposed in this Pull Request

• following logic from @millingermarkus, I added the large biomass boiler post-combustion capture retrofit data to the existing add_carbon_capture function
• This retrofit is larger (500 MW(th)) than the already implemented "small CHP" (100 MW(th)) retrofit, therefore it is a better approximation for full-scale thermal power plants such as CCGTs. To fit to CCGTs, I will make further adjustments to the capex, efficiency and

Checklist

• Code changes are sufficiently documented; i.e. new functions contain docstrings and further explanations may be given in doc.
• Data source for new technologies is clearly stated.
• Newly introduced dependencies are added to environment.yaml (if applicable).
• A note for the release notes doc/release_notes.rst of the upcoming release is included.
• I consent to the release of this PR's code under the GPLv3 license.