Add CI for Rust code

Author: LegNeato

.github/workflows/rust.yaml

@@ -0,0 +1,53 @@
+name: Rust
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  test:
+    name: Run Rust Tests
+    runs-on: ubuntu-latest
+
+    steps:
+      # Checkout the code
+      - name: Checkout Code
+        uses: actions/checkout@v4
+
+      # Set up Rust toolchain.
+      # This will be overwritten anyway by a `rust-toolchain.toml`
+      # file.
+      - name: Setup Rust Toolchain
+        uses: actions-rust-lang/setup-rust-toolchain@v1
+        with:
+          toolchain: stable
+          components: rustfmt
+
+      # Run rustfmt and confirm no changes for each `blog/*/code` directory
+      - name: Check Formatting
+        run: |
+          for dir in blog/*/code; do
+            if [ -f "$dir/Cargo.toml" ]; then
+              echo "Checking formatting in $dir"
+              (cd "$dir" && cargo fmt --check)
+            else
+              echo "Skipping $dir as it does not contain a Cargo.toml file"
+            fi
+          done
+
+      # Run tests for each `blog/*/code` directory
+      - name: Build and Test
+        run: |
+          for dir in blog/*/code; do
+            if [ -f "$dir/Cargo.toml" ]; then
+              cd "$dir";
+              echo "Running build in $dir"
+              cargo build --release
+              echo "Running tests in $dir"
+              cargo test --release
+            else
+              echo "Skipping $dir as it does not contain a Cargo.toml file"
+            fi
+          done