feat(homelab): add dhcp lease parsing

nix/homelab/src/error.rs

@@ -0,0 +1,15 @@
+use thiserror::Error;
+
+#[derive(Debug, Error)]
+pub enum Error {
+    #[error("SSH error: {0}")]
+    SSH(#[from] ssh2::Error),
+    #[error("parse error: {0}")]
+    Parse(String),
+    #[error("IO error: {0}")]
+    IO(#[from] std::io::Error),
+    #[error("command return non 0 exit code: {0}")]
+    ExitCode(i32),
+}
+
+pub type Result<T> = std::result::Result<T, Error>;