add lualine and play a bit with astroui

plugins/astroui/default.nix

@@ -0,0 +1,14 @@
+{pkgs, lib, ...}:let 
+  inherit (lib.nixvim.lua) toLuaObject;
+
+  options = {
+    status.setup_colors.__raw = "function() print('foobar') end";
+    # colorscheme = "kanagawa";
+  };
+in {
+  extraPlugins = [pkgs.vimPlugins.astroui];
+
+  extraConfigLua = /*lua*/ ''
+    require('astroui').setup(${toLuaObject options});
+  '';
+}