v6.2.6: luaUtils fixes and qol

If you started in the last 2-3 weeks and your config contains the optional require('nixCatsUtils.catPacker') file, your template contains a serious regression due to a strange git mistake. This only affects when you try to run the configuration without nix being involved, which is also why it went uncaught.

It uses the wrong plugin. You may wish to re initialize the template by deleting the offending file, and running nix flake init -t github:BirdeeHub/nixCats-nvim#luaUtils from the top level of your config, or simply copy paste the new contents into the file, so that you can use the intended paq-nvim as it works somewhat better, and the example configuration has a file that expects the paq-nvim syntax in myLuaConf

This is the intended version you should have https://github.com/BirdeeHub/nixCats-nvim/blob/main/templates/luaUtils/lua/nixCatsUtils/catPacker.lua

Apologies for any confusion this may have caused!

I also improved the behavior of go to file and similar commands within the :NixCats debug command's popup window, and changed the nix store filename scheme of the packages slightly to better improve clarity of multi-nvim stacktraces