feat(extras): add fish theme format (#306)

* feat(extras): move fish colors from script to theme format

* move fish themes to fish_themes

lua/tokyonight/extra/fish_themes.lua

@@ -0,0 +1,47 @@
+local util = require("tokyonight.util")
+
+local M = {}
+
+--- @param colors ColorScheme
+function M.generate(colors)
+  local fishColors = {}
+  for k, v in pairs(colors) do
+    if type(v) == "string" then
+      fishColors[k] = v:gsub("^#", "")
+    end
+  end
+
+  local fish = util.template(
+    [[
+    # TokyoNight
+
+    # Syntax Highlighting Colors
+    fish_color_normal ${fg}
+    fish_color_command ${cyan}
+    fish_color_keyword ${magenta}
+    fish_color_quote ${yellow}
+    fish_color_redirection ${fg}
+    fish_color_end ${orange}
+    fish_color_error ${red}
+    fish_color_param ${purple}
+    fish_color_comment ${comment}
+    fish_color_selection --background=${bg_visual}
+    fish_color_search_match --background=${bg_visual}
+    fish_color_operator ${green}
+    fish_color_escape ${magenta}
+    fish_color_autosuggestion ${comment}
+
+    # Completion Pager Colors
+    fish_pager_color_progress ${comment}
+    fish_pager_color_prefix ${cyan}
+    fish_pager_color_completion ${fg}
+    fish_pager_color_description ${comment}
+    fish_pager_color_selected_background --background=${bg_visual}
+  ]],
+    fishColors
+  )
+
+  return fish
+end
+
+return M

lua/tokyonight/extra/init.lua

@@ -16,6 +16,7 @@ function M.setup()
   local extras = {
     kitty = "conf",
     fish = "fish",
+    fish_themes = "theme",
     alacritty = "yml",
     wezterm = "toml",
     tmux = "tmux",