feat: set up 'claude-code.nvim' plugin

dots/.config/nvim/lua/paq-setup.lua

@@ -43,4 +43,5 @@ require("nixCatsUtils.catPacker").setup({
   { "zbirenbaum/copilot-cmp" },
   { "qvalentin/helm-ls.nvim", ft = "helm" },
   { "mikesmithgh/kitty-scrollback.nvim" },
+  { "greggh/claude-code.nvim" },
 })