Implement native ESP-IDF radar firmware

.github/workflows/build.yml

@@ -0,0 +1,28 @@
+name: build
+
+on:
+  push:
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  host-tests:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Configure
+        run: cmake -S tests -B build-host -DCMAKE_BUILD_TYPE=Debug
+      - name: Build
+        run: cmake --build build-host --parallel
+      - name: Test
+        run: ctest --test-dir build-host --output-on-failure
+
+  esp-idf:
+    runs-on: ubuntu-latest
+    container: espressif/idf:v5.3.4
+    steps:
+      - uses: actions/checkout@v4
+      - name: Build ESP32-S3 firmware
+        run: idf.py build