Multiple changes (cleanup, remove edison, add felixalbpc)

- Removes hold host edison
- Adds new host, felixalbpc, a work machine. This requires some cleanup
  to fit into the office network, use other SSH keys, etc.
- Clean up some package installs, putting more things into the common
  home-manager packages, rather than systemwide or host-specific homes.
- Various small changes like disabling Github Copilot on nvim startup.

home/neovim.nix

@@ -32,6 +32,7 @@ in {
       coc-pyright
 
       vim-nix
+      vim-puppet
     ];
 
     withNodeJs = true;
@@ -122,6 +123,9 @@ in {
 
       " Disable search highlights
       map <Leader><Space> :noh<CR>
+
+      " Start with copilot disabled
+      autocmd VimEnter *  Copilot disable
     '';
   };