✨ Split up config files to multiple and added imports. Fixed default values for systemConfigs

shared/modules/nixos.nix

@@ -0,0 +1,25 @@
+{
+  pkgs,
+  outputs,
+  systemConfig,
+  ...
+}:
+
+{
+  environment.systemPackages = with pkgs; [
+    nix-prefetch-github # Cmd to get rev and hash from GitHub
+  ];
+
+  nix.settings.experimental-features = [
+    "nix-command"
+    "flakes"
+  ];
+
+  nixpkgs = {
+    # Allow unfree packages
+    config.allowUnfree = true;
+    overlays = [ outputs.overlays.unstable-packages ];
+  };
+
+  system.stateVersion = systemConfig.version;
+}