add tokyonight theme

lua/plugins/ui.lua

@@ -53,5 +53,14 @@ return {
             vim.g.floaterm_giteditor = false
             vim.keymap.set('n', '<leader>cw', '<cmd>:FloatermNew git commit<cr>', { noremap = true, silent = true })
         end
-    }
+    },
+    {
+      "folke/tokyonight.nvim",
+      lazy = false,
+      priority = 1000,
+      opts = {},
+      init = function ()
+        vim.cmd[[colorscheme tokyonight-night]]
+      end
+    },
 }