ci: Add GitHub Actions workflow to run tests on pull requests and pushes

.github/workflows/run_test.yml

@@ -0,0 +1,21 @@
+name: run_test
+
+on:
+    pull_request:
+        types: [opened, reopened]
+    push:
+        branches:
+            - "**"
+
+jobs:
+    run_test_ubuntu:
+        runs-on: ubuntu-latest
+
+        steps:
+            - uses: actions/checkout@v4
+
+            - name: Install Rust stable
+              uses: dtolnay/rust-toolchain@stable
+
+            - name: Run tests
+              run: cargo test