add server restart support w/ admin command

Signed-off-by: Jason Volk <jason@zemos.net>

src/main/restart.rs

@@ -0,0 +1,17 @@
+#![cfg(unix)]
+
+use std::{env, os::unix::process::CommandExt, process::Command};
+
+use conduit::{debug, info};
+
+pub(super) fn restart() -> ! {
+	let exe = env::current_exe().expect("program path must be identified and available");
+	let envs = env::vars();
+	let args = env::args().skip(1);
+	debug!(?exe, ?args, ?envs, "Restart");
+
+	info!("Restart");
+
+	let error = Command::new(exe).args(args).envs(envs).exec();
+	panic!("{error:?}");
+}