Add gruvbox-light theme

[crodjer]

Similar to gruvbox, add the light version as well.

[pickfire]

Thanks. I think you might also want to add it to the wiki. https://github.com/helix-editor/helix/wiki/Themes

[archseer]

The theme is missing markup. scopes, can you add those as well?

[crodjer]

The theme is missing markup. scopes, can you add those as well?

@archseer Not aware of markup.. I borrowed from the existing gruvbox (dark) theme, which didn't have it.

[archseer]

They were a recent addition so they are missing from the dark theme too

helix/theme.toml

Lines 31 to 36 in 97e6f2a

	"markup.heading" = "lilac"
	"markup.bold" = { modifiers = ["bold"] }
	"markup.italic" = { modifiers = ["italic"] }
	"markup.link.url" = { fg = "silver", modifiers = ["underlined"] }
	"markup.link.text" = "almond"
	"markup.raw" = "almond"

It's used for styling markdown and will soon also be used for documentation popups

[crodjer]

@archseer Thanks for the suggestion, crated a PR: #1518