add chrono dependency

Cargo.lock

@@ -121,6 +121,15 @@ dependencies = [
  "vcell",
 ]
 
+[[package]]
+name = "chrono"
+version = "0.4.44"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c673075a2e0e5f4a1dde27ce9dee1ea4558c7ffe648f576438a20ca1d2acc4b0"
+dependencies = [
+ "num-traits",
+]
+
 [[package]]
 name = "critical-section"
 version = "1.2.0"
@@ -536,6 +545,7 @@ dependencies = [
 name = "lib-bms-protocol"
 version = "0.1.0"
 dependencies = [
+ "chrono",
  "embedded-hal 1.0.0",
  "thiserror",
 ]

lib-bms-protocol/Cargo.toml

@@ -4,6 +4,7 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
+chrono = { version = "0.4.44", default-features = false }
 embedded-hal = "1.0.0"
 thiserror = { version = "2.0.17", default-features = false }