DEA cost for Fischer-Tropsch, methanolisation

[millingermarkus]

Closes # (if applicable).

Changes proposed in this Pull Request

Changing from Agora values for methanolisation, Fischer-Tropsch and methanation to DEA values.

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.

[euronion]

Thanks for the suggestions. There are a few things I have to ask you to recheck!

[millingermarkus]

@euronion I made the updates, please have a look!

[fneum]

LGTM, just one or two things to double-check (and re-run csv creation).

[euronion]

Only some polishing left

[millingermarkus]

Now it should be good to go! Sorry for the unintended changes. Thanks @euronion and @fneum for the thorough check!

[euronion]

LGTM, thanks a lot!