From lazy.nvim to vim.pack

@codeinabox Just made the change last week! Wasn’t *too* bad and in a lot of ways it feels simpler. But I am having some trouble with a few custom plugins.

I decided to migrate to zpack.nvim instead. Got to keep my old lazy config with minimal changes, and it works pretty great. I guess I just like the modular nature of my setup, and also I just went through a major rewrite last month, don't wanna redo it just yet.