feat: differentiate between core and extended pkgs

also use core packages in server system profile

modules/software/packages.nix

@@ -1,68 +0,0 @@
-{pkgs, ...}: {
-  environment.systemPackages = with pkgs; [
-    # low level stuff
-    efibootmgr
-    #exfat
-    exfatprogs
-    greetd.greetd
-    greetd.tuigreet
-    killall
-    vulnix
-
-    # hardware
-    brightnessctl
-    usbutils
-    lm_sensors
-
-    unstable.neovim
-
-    git
-    gitui
-    lazygit
-
-    gnumake
-    gcc
-    nodePackages.npm
-    nodejs-slim
-    python3
-    fd
-    nodejs-slim
-    cargo
-    rustc
-
-    # tooling
-    htop
-    btop
-    ncdu
-    wget
-    unstable.yt-dlp
-    miniserve
-    file
-    unzip
-    tmux
-    fzf
-    ripgrep
-    qemu
-    home-manager
-    dfc
-    p7zip
-    sops
-
-    # move to homemanager?
-    unstable.mumble
-    amberol
-    mpv
-    nuclear
-    #zathura
-    sioyek
-    #feh
-    nomacs
-    #unstable.obsidian
-    keepassxc
-    #minecraft
-    element-desktop
-    rustdesk-flutter
-    timer
-    unstable.prusa-slicer
-  ];
-}