feat(layout): add Swedish Colemak (kevinalavik)

[KevinAlavik]

Description

I added the swedish colemak layout (based on https://github.com/motform/colemak-se)

Checks

• Adding quotes?
  • Make sure to include translations for the quotes in the description (or another comment) so we can verify their content.
• Adding a language or a theme?
  • If is a language, did you edit _list.json, _groups.json and add languages.json?
  • If is a theme, did you add the theme.css?
    • Also please add a screenshot of the theme, it would be extra awesome if you do so!
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