refactor: extract shell setup

horsch.nix

@@ -6,10 +6,6 @@
 
   home.stateVersion = "24.05"; # Please read the comment before changing.
 
-  home.sessionVariables = {
-    EDITOR = "nvim";
-  };
-
   programs.home-manager.enable = true;
 
   home.packages = with pkgs; [
@@ -18,23 +14,8 @@
   ];
 
   imports = [
-    ./bat.nix
-    ./carapace.nix
-    ./direnv.nix
-    ./eza.nix
-    ./fzf.nix
-    ./git.nix
-    ./gpg
-    ./neovim
     ./picocom.nix
     ./podman.nix
-    ./ripgrep.nix
-    ./rsync.nix
-    ./shell_aliases.nix
-    ./starship.nix
-    ./tree.nix
-    ./zoxide.nix
-    ./zsh.nix
 
     ./horsch/ssh.nix
     ./horsch/zsh.nix