👷 Setup CI job matrix for cargo test

Ensure that Rust unit tests and doctests are checked too. Running on Ubuntu-24.04.

.github/workflows/ci.yml

@@ -14,10 +14,25 @@ on:
     types: [ opened, reopened, synchronize ]
     branches: [ "main" ]
 
+env:
+  CARGO_TERM_COLOR: always
+
 permissions:
   contents: read
 
 jobs:
+  cargo:
+    runs-on: ubuntu-24.04
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11  # v4.1.1
+
+    - name: Build
+      run: cargo build --verbose
+
+    - name: Run tests
+      run: cargo test --verbose
+
   linux:
     runs-on: ubuntu-22.04
     strategy: