refactor and modularize base.nix futher; use default.nix when possible

configuration/base/programs.nix

@@ -0,0 +1,37 @@
+{ pkgs, ... }:
+
+{
+  security.sudo-rs.enable = true;
+  services.fwupd.enable = true;
+  services.flatpak.enable = true;
+  programs.bash.blesh.enable = true;
+  programs.fish.enable = true;
+  # List packages installed in system profile. To search, run:
+  # $ nix search wget
+  environment.systemPackages = with pkgs;
+    [
+      # utils
+      uutils-coreutils-noprefix
+      vim
+      curl
+      inetutils
+      dig
+
+      rar
+      zstd
+      xz
+      p7zip
+
+      libva-utils
+      smartmontools
+      appimage-run
+
+      # dicts
+      nuspell
+      hunspellDicts.en-gb-large
+
+      # For cursor in steam?
+      xsettingsd
+      xorg.xrdb
+    ];
+}