feat: Add everforest light and dark

[echoriiku]

[thecodrr]

I like the dark one. The contrast on the light variant is really really low, is that intentional?

[echoriiku]

The contrast on the light variant is really really low, is that intentional?

Yeah, I think it looks like the original Vim theme https://github.com/sainnhe/everforest

I'm more of a dark theme user too, but I can make the light theme a bit more "greener", closer to the "Everforest Light Soft" variant of the original theme.

[github-actions]

Your preview URL is: https://theme-builder.notesnook.com/notes?from_pr=streetwriters/notesnook-themes/103

[echoriiku]

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