Added Cargo.lock (#2)

Added in the Cargo.lock file as this will be a binary and we need it.
This is just a barebones one for now and will be expanded upon as we add
in new crates.

Reviewed-on: #2

Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "rstow"
+version = "0.1.0"

Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "rstow"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]

src/main.rs

@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, world!");
+}