Replace common functionality with rust implementation

mgr/src/wire/client.rs

@@ -0,0 +1,20 @@
+use std::{
+    io::{self, Write as _},
+    os::unix::net::UnixStream,
+};
+
+use thiserror::Error;
+
+use super::{super::Action, WireCommand as _};
+
+#[derive(Debug, Error)]
+pub enum SendError {
+    #[error(transparent)]
+    Io(#[from] io::Error),
+}
+
+impl Action {
+    pub fn send(&self, stream: &mut UnixStream) -> Result<(), SendError> {
+        Ok(stream.write_all(&self.to_wire())?)
+    }
+}