Add Swedish localization

[VKronmar]

Summary

Hi, i would like to add swedish localization.

Checklist

• I have read the contributing guidelines.
• My code is of good quality and follows the coding standards of the project.
• I have tested my changes, and they work as expected.

[github-actions]

All contributors have signed the CLA ✍️ ✅
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[VKronmar]

I have read the CLA Document and I hereby sign the CLA

[VKronmar]

recheck

[daveearley]

Thanks you very much for this work, @VKronmar! Very much appreciated :-)

[LogFlames]

I have read the CLA Document and I hereby sign the CLA

[VKronmar]

Hi @daveearley ,
It is now merged to the latest develop, ready to merge. Is there something still in the pipeline before it can be merged?

[daveearley]

Hi @VKronmar,

Thanks again for the work here, it is very much appreciated.

I noticed only the backend translations have been added, and not the frontend (frontend/src/locales/se.po). This makes we reluctant to merge this as the majority of the translations on the platform are on the frontend.

Let me know if you can add them. If not, when I have time, I can run them through an AI translation service

[VKronmar]

Hi @daveearley,

I totaly missed the frontend translations, i will add the other translations aswell asap.

[VKronmar]

@daveearley now all translations are added and recompiled (phew). Please write if anything else is missing! :)