Add flash and C-d C-u

lua/plugins/flash.lua

@@ -0,0 +1,9 @@
+return {
+  "folke/flash.nvim",
+  event = "VeryLazy",
+  ---@type Flash.Config
+  opts = {},
+  keys = {
+    { "zk", mode = { "n", "x", "o" }, function() require("flash").jump() end, desc = "Flash" },
+  },
+}