feat: add state version to State

Cargo.lock

@@ -120,6 +120,7 @@ dependencies = [
  "serde",
  "serde_json",
  "server_fn",
+ "smart-default",
  "tokio",
  "tower 0.4.13",
  "tower-http 0.5.2",
@@ -2333,6 +2334,17 @@ version = "1.13.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3c5e1a9a646d36c3599cd173a41282daf47c44583ad367b8e6837255952e5c67"
 
+[[package]]
+name = "smart-default"
+version = "0.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0eb01866308440fc64d6c44d9e86c5cc17adfe33c4d6eed55da9145044d0ffc1"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "socket2"
 version = "0.5.8"