refactor: move caddy and cloudflare to common folder

common/caddy.nix

@@ -0,0 +1,6 @@
+{...}: {
+  services.caddy.enable = true;
+
+  # Caddy Ports
+  networking.firewall.allowedTCPPorts = [80 433];
+}

common/cloudflare.nix

@@ -0,0 +1,17 @@
+{config, ...}: {
+  virtualisation.oci-containers.containers.cloudflare-tunnel = {
+    image = "cloudflare/cloudflared:latest";
+    autoStart = true;
+    extraOptions = [
+      "--network=host"
+    ];
+    cmd = [
+      "tunnel"
+      "--no-autoupdate"
+      "run"
+    ];
+    environmentFiles = [
+      config.sops.secrets."cloudflared/tunnel-env".path
+    ];
+  };
+}

common/default.nix

@@ -1,5 +1,7 @@
 {...}: {
   imports = [
     ./tailscale.nix
+    ./caddy.nix
+    ./cloudflare.nix
   ];
 }