Add Rust project for self-testing

.gitignore

@@ -3,3 +3,4 @@
 /package.json
 .\#*
 \#*\#
+test-project/target/**

test-project/Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "test-project"
+version = "0.1.0"

test-project/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "test-project"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]

test-project/src/main.rs

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