Add cargo test to github actions

.github/workflows/cargo-test.yaml

@@ -0,0 +1,17 @@
+name: Cargo Test
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    name: Run cargo test
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+      - name: Install Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+      - name: Run cargo test
+        run: cargo test