Work on hydra config, fix tor relay config, prepare web-public-2 host

hosts/web-public-2/configuration.nix

@@ -0,0 +1,14 @@
+{ ... }:
+{
+  boot.loader.grub = {
+    enable = true;
+    device = "/dev/vda";
+  };
+
+  networking = {
+    hostName = "web-public-02";
+    firewall.enable = false;
+  };
+
+  system.stateVersion = "23.05";
+}

hosts/web-public-2/default.nix

@@ -0,0 +1,7 @@
+{ ... }:
+{
+  imports = [
+    ./configuration.nix
+    ./nginx.nix
+  ];
+}

hosts/web-public-2/nginx.nix

@@ -0,0 +1,6 @@
+{ ... }:
+{
+  services.nginx = {
+    enable = true;
+  };
+}