add github action to build repo with lyrat v4.3 sdkconfig

.github/workflows/build_esp32_lyrat_v4.3.yml

@@ -0,0 +1,23 @@
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repo
+      uses: actions/checkout@v2
+      with:
+        submodules: 'recursive'
+    - name: Espressif IoT Development Framework (ESP-IDF)
+      # You may pin to the exact commit or the version.
+      # uses: espressif/esp-idf-ci-action@8cd22ae10042fadc37890e81e9988a9113e7b506
+      uses: espressif/esp-idf-ci-action@v1.1.0
+      with:
+        # Relative path under $GITHUB_WORKSPACE to place the repository
+        #path: # optional, default is 
+        # Version of ESP-IDF docker image to use
+        esp_idf_version: v5.1.1 # optional, default is latest
+        # ESP32 variant to build for
+        target: esp32 # optional, default is esp32
+        # Command to run inside the docker container (default: builds the project)
+        command: idf.py build -DSDKCONFIG=./sdkconfig_lyrat_v4.3 # optional, default is idf.py build