Merge pull request #102 from Rolv-Apneseth/add-testing-workflow

ci: add testing workflow

.github/workflows/tests.yml

@@ -0,0 +1,18 @@
+name: Tests
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Rust toolchain
+        run: rustup toolchain install stable --profile minimal
+
+      - name: Test all packages in the workspace
+        run: cargo test --workspace