Reorganize hosts and modules

modules/common.nix

@@ -0,0 +1,29 @@
+{ pkgs, ... }:
+{
+  nixpkgs.config.allowUnfree = true;
+
+  nix.settings.experimental-features = [ "nix-command" "flakes" ];
+
+  programs.git = {
+    enable = true;
+    lfs.enable = true;
+    config = {
+      init.defaultBranch = "master";
+      user = {
+        email = "git@nettika.cat";
+        name = "Nettika";
+      };
+      credential.helper = "store";
+    };
+  };
+  
+  programs.nano = {
+    enable = true;
+    nanorc = ''
+      set autoindent
+      set linenumbers
+    '';
+  };
+  
+  environment.systemPackages = [ pkgs.git-crypt ];
+}