Build Rust project in CI

.github/workflows/ci-build.yml

@@ -0,0 +1,36 @@
+name: CI Build for ESP32-C3
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v2
+
+    - name: Setup Rust
+      uses: actions-rs/toolchain@v1
+      with:
+        toolchain: stable
+        override: true
+
+    - name: Install Espressif Rust environment
+      run: |
+        curl -sSL https://raw.githubusercontent.com/espressif/rust-esp/main/install.sh | bash
+        source $HOME/export-esp.sh
+
+    - name: Build project
+      run: |
+        cargo build --release
+
+    - name: Test build output
+      run: |
+        ls -l target/riscv32imc-unknown-none-elf/release/