add rust build workflow

.github/workflows/build.yml

@@ -0,0 +1,73 @@
+name: Rust CI
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build-and-test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macOS-latest]
+
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/cache@v2
+      with:
+        path: |
+          ~/.cargo/registry
+          ~/.cargo/git
+          target
+        key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+    - name: Install Rust
+      uses: actions-rs/toolchain@v1
+      with:
+        toolchain: stable
+        override: true
+    - name: Build
+      run: cargo build --verbose
+    - name: Run tests
+      run: cargo test --verbose
+
+  cross-compile:
+    runs-on: ${{ matrix.host }}
+    strategy:
+      matrix:
+        include:
+          - host: ubuntu-latest
+            target: x86_64-pc-windows-gnu
+          - host: ubuntu-latest
+            target: x86_64-apple-darwin
+          - host: ubuntu-latest
+            target: aarch64-apple-darwin
+          - host: macOS-latest
+            target: x86_64-unknown-linux-gnu
+          - host: macOS-latest
+            target: x86_64-pc-windows-gnu
+
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/cache@v2
+      with:
+        path: |
+          ~/.cargo/registry
+          ~/.cargo/git
+          target
+        key: ${{ runner.os }}-${{ matrix.target }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+    - name: Install Rust
+      uses: actions-rs/toolchain@v1
+      with:
+        toolchain: stable
+        target: ${{ matrix.target }}
+        override: true
+    - name: Install dependencies
+      run: |
+        if [ "${{ matrix.host }}" = "ubuntu-latest" ]; then
+          sudo apt-get update
+          sudo apt-get install -y mingw-w64
+        fi
+    - name: Cross-compile
+      run: cargo build --verbose --target ${{ matrix.target }}