feat: differentiate between core and extended pkgs

also use core packages in server system profile

modules/software/packages/extended.nix

@@ -0,0 +1,59 @@
+{pkgs, ...}: {
+  environment.systemPackages = with pkgs; [
+    # low level stuff
+    efibootmgr
+    #exfat
+    exfatprogs
+    greetd.greetd
+    greetd.tuigreet
+    killall
+    vulnix
+
+    # hardware
+    brightnessctl
+    usbutils
+    lm_sensors
+
+    unstable.neovim
+
+    gitui
+    lazygit
+
+    gnumake
+    gcc
+    nodePackages.npm
+    nodejs-slim
+    python3
+    fd
+    nodejs-slim
+    cargo
+    rustc
+
+    # tooling
+    btop
+    unstable.yt-dlp
+    miniserve
+    fzf
+    qemu
+    home-manager
+    dfc
+    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
+  ];
+}