nvim: lua: plugins: Fix paq cleaning itself

Since PaqClean cleans up anything in packages directory that are not in
configuration, including itself, it is necessary to include paq itself
in the packages list.

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

@@ -1,6 +1,7 @@
 vim.cmd 'packadd paq-nvim'
 local paq = require'paq-nvim'.paq
 
+paq {'savq/paq-nvim', opt = true}
 -- Vertical Motion
 paq 'justinmk/vim-sneak'
 -- Search