feat: v1.1.0, add external sign/ecdh support

examples/external_sign.rs

@@ -0,0 +1,10 @@
+use swift_secure_enclave_tool_rs::external_sign;
+
+fn main() {
+    let args = std::env::args().collect::<Vec<_>>();
+    let parameter = &args[1];
+
+    let signature = external_sign("card-cli", parameter, "ES256", b"hello world").unwrap();
+
+    println!("{}", hex::encode(&signature));
+}