feat(extras): add Tilix themes (#188)

lua/tokyonight/extra/init.lua

@@ -18,6 +18,7 @@ local extras = {
 	tmux = "tmux",
 	xresources = "Xresources",
 	xfceterm = "theme",
+	tilix = "json",
 }
 -- map of style to style name
 local styles = { 

lua/tokyonight/extra/tilix.lua

@@ -0,0 +1,40 @@
+local util = require("tokyonight.util")
+
+local M = {}
+
+--- @param colors ColorScheme
+function M.generate(colors)
+  local tilix = util.template(
+    [[
+{
+    "name": "${_style_name}",
+    "comment": "",
+    "use-theme-colors": false,
+    "foreground-color": "${fg}",
+    "background-color": "${bg}",
+    "palette": [
+        "${black}",
+        "${red}",
+        "${green}",
+        "${yellow}",
+        "${blue}",
+        "${magenta}",
+        "${cyan}",
+        "${fg_dark}",
+        "${terminal_black}",
+        "${red}",
+        "${green}",
+        "${yellow}",
+        "${blue}",
+        "${magenta}",
+        "${cyan}",
+        "${fg}"
+    ]
+}
+  ]],
+    colors
+  )
+  return tilix
+end
+
+return M