Correct co2 potentials

[lisazeyen]

Closes # (if applicable).
#816

Changes proposed in this Pull Request

We use the CO2 sequestration potentials from the CO2 stop project of the European Commission

We should consider not only the column "conservative estimate Mt" done here since this is only storage potential for geological reservoirs suitable for CO2 storage not including hydrocarbon fields (gas + oil) or saline aquifers which are separately listed and in the dataset are called "daughter units" in ['conservative estimate GAS Mt', 'conservative estimate OIL Mt', 'conservative estimate aquifer Mt'].

An even more conservative assumption would be to include only storage resources with high density potentials which are the named three hydrocarbon fields (gas + oil) or saline aquifers and exclude the "conservative estimate Mt" which contains the largest part of the CO2 storage potential (78%)

Checklist

• I tested my contribution locally and it seems to work fine.
• Code and workflow changes are sufficiently documented.
• Changed dependencies are added to envs/environment.yaml.
• Changes in configuration options are added in all of config.default.yaml.
• Changes in configuration options are also documented in doc/configtables/*.csv.
• A release note doc/release_notes.rst is added.