Add minor features

[energyLS]

Changes proposed in this Pull Request

• Fixes the scaling bug in shipping
• Introduces the export wildcard

Checklist

• [ ] I tested my contribution locally and it seems to work fine.
• [ ] Code and workflow changes are sufficiently documented.
• [ ] Newly introduced dependencies are added to envs/environment.yaml and envs/environment.docs.yaml.
• [ ] Changes in configuration options are added in all of config.default.yaml, config.tutorial.yaml, and test/config.test1.yaml.
• [ ] Changes in configuration options are also documented in doc/configtables/*.csv and line references are adjusted in doc/configuration.rst and doc/tutorial.rst.
• [ ] A note for the release notes doc/release_notes.rst is amended in the format of previous release notes, including reference to the requested PR.

[energyLS]

@Hazem-IEG I have opened up a PR with your changes and reviewed them. I have some minor comments but nothing critical I guess. One important thing though: I think you have incorporated many changes in config.yaml (e.g. h2export, etc,...) but this file is in gitignore. Could you copy the changes you have made in config.yaml to config.default.yaml and push config.default.yaml? Then I can proceed in getting the CI running. Thanks :)

[energyLS]

@Hazem-IEG I have made a couple of updates in the config.pypsa-earth.yaml and config.test1.yaml and tested it. Now it looks all good and runs on my local machine, I expect the CI to run as well. Once it does, could you please add an "Approving review"? -> Just approve it, could be done in seconds. Since I opened up the PR, my review doesn't count and the merge is blocked.

[energyLS]

@Hazem-IEG I have fixed it :) Now it is all ready to merge, I just need your approving review. Thanks!