nvim: Load nvim-surround as VeryLazy

This fixes the somewhat confusing issue of trying to use any of the
surround operations before entering insert mode at least once in a file
(so, probably as the first operation). Before, the plugin would just
silently fail.
Now it simply loads very lazily, which does not affect load times
strongly.

nvim/.config/nvim/lua/plugins/editing.lua

@@ -9,7 +9,7 @@ return {
 		},
 	},
 	-- surround things with other things using ys/cs/ds
-	{ "kylechui/nvim-surround", config = true, event = "InsertEnter" },
+	{ "kylechui/nvim-surround", config = true, event = "VeryLazy" },
 
 	-- extend the ^a / ^x possibilities to dates, hex, alphabets, markdown headers
 	{