Improve filename consistency in the sources

[tgilon]

Changes proposed in this Pull Request

This PR proposes to improve the filename consistency in the sources, using the top-level folder as a reference.

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.

[fneum]

LGTM

[lkstrp]

This needs some wild merge conflict resolution and then is good to go @finozzifa ?

[finozzifa]

This needs some wild merge conflict resolution and then is good to go @finozzifa ?

Hi @lkstrp I guess so. I think we should ask @tgilon what his opinion is though.

Thanks!!!

[tgilon]

@lkstrp I've fixed the conflicts

[lkstrp]

There is still a small pre-commit issue that cannot be resolved since you are merging from an org account, I think. Maybe something that makes sense to change in your org settings

[tgilon]

There is still a small pre-commit issue that cannot be resolved since you are merging from an org account, I think. Maybe something that makes sense to change in your org settings

I've fixed it manually for now. I'll look into how to enable it.