Add GHA workflow

Signed-off-by: Jiahao XU <Jiahao_XU@outlook.com>

.github/workflows/ci.yml

@@ -0,0 +1,51 @@
+name: ci
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  fmt:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - run: rustup component add rustfmt
+    - uses: Swatinem/rust-cache@v2
+
+    - run: cargo fmt --all -- --check
+
+  clippy:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - run: rustup component add clippy
+    - uses: Swatinem/rust-cache@v2
+
+    - run: cargo clippy --all
+
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+    - uses: Swatinem/rust-cache@v2
+
+    - run: cargo test
+
+  # Dummy job to have a stable name for the "all tests pass" requirement
+  tests-pass:
+    name: Tests pass
+    needs:
+    - fmt
+    - clippy
+    - test
+    if: always() # always run even if dependencies fail
+    runs-on: ubuntu-latest
+    steps:
+    # fail if ANY dependency has failed or cancelled
+    - if: "contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled')"
+      run: exit 1
+    - run: exit 0