split everything into modules and update nixpkgs

services/cloudflared.nix

@@ -0,0 +1,16 @@
+{
+  services.cloudflared = {
+    enable = true;
+    tunnels = {
+      "thinkpad" = {
+        credentialsFile = "/home/aditya/.cloudflared/a3a0512b-6c48-44f9-b760-15d6cf7d1232.json";
+        default = "http_status:404";
+        ingress = {
+          "thinkpad.aditya.stream" = {
+            service = "http://localhost:3000";
+          };
+        };
+      };
+    };
+  };
+}