Run tests on every pull request

.github/workflows/tests.yml

@@ -0,0 +1,30 @@
+name: "Continuous integration"
+
+on:
+  pull_request:
+    branches:
+      - main
+  workflow_call:
+
+
+jobs:
+  cargotest:
+    steps:
+      - name: "Checkout repository"
+        uses: actions/checkout@v3
+
+      - name: "Install Rust toolchain"
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+
+      - name: "Run cargo clippy"
+        uses: actions-rs/clippy-check@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          args: --all-features
+
+      - name: "Run cargo test"
+        uses: actions-rs/cargo@v1
+        with:
+          command: test