ci: rust workflow

.github/workflows/rs.yml

@@ -0,0 +1,40 @@
+name: Rust
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        include:
+          - os: ubuntu-20.04
+      fail-fast: false
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        submodules: "recursive"
+    - name: ccache
+      uses: hendrikmuhs/ccache-action@v1
+    - name: Install dependencies (Ubuntu)
+      working-directory: ./scripts
+      run: |
+        ./install_deps_ubuntu.sh
+      if: matrix.os == 'ubuntu-20.04'
+
+    - name: Download dependencies (proto)
+      run: |
+        source ./bootstrap_venv.sh
+
+    - name: Install Rust
+      shell: bash
+      run: curl https://sh.rustup.rs -sSf | sh -s -- -y
+
+    - name: Compile (rust)
+      run: |
+        source venv/bin/activate
+        cargo build