feat: add numb.nvim

Author: aarondill

lua/plugins/numb.lua

@@ -0,0 +1,7 @@
+---@type LazySpec
+---Peek the line number in the cmdline (:10)
+return {
+  "nacro90/numb.nvim",
+  event = "CmdlineEnter",
+  opts = {},
+}