nvim: Add improved helpfile rendering

Advanced rendering like the markdown render view.

nvim/.config/nvim/lua/plugins/ui.lua

@@ -92,4 +92,12 @@ return {
 		opts = {},
 		event = "VeryLazy",
 	},
+	{
+		"OXY2DEV/helpview.nvim",
+		-- lazy = false, -- Recommended by dev?
+		ft = "help",
+		dependencies = {
+			"nvim-treesitter/nvim-treesitter",
+		},
+	},
 }