feat(nvim): add todo comments plugin

nvim/after/plugin/todo-comments.lua

@@ -0,0 +1,7 @@
+-- https://github.com/folke/todo-comments.nvim
+local status_ok, todo = pcall(require, "todo-comments")
+if not status_ok then
+	return
+end
+
+todo.setup()

nvim/lua/kogakure/plugins.lua

@@ -170,6 +170,7 @@ return packer.startup(function(use)
 	use("wakatime/vim-wakatime") -- Wakatime
 	use("github/copilot.vim") -- GitHub Copilot
 	use("cshuaimin/ssr.nvim") -- Structural search and replace
+	use("folke/todo-comments.nvim") -- Highlight TODOs
 
 	-- Custom Text Objects
 	use("christoomey/vim-titlecase")