Adding QEmu to esp-idf CI tests

Author: tobozo

.github/workflows/IDFBuild.yml

@@ -110,8 +110,10 @@ jobs:
           idf.py build merge-bin
           [[ -f "build/merged-binary.bin" ]] || exit 1
           echo "idf_board=$idf_board" >> $GITHUB_OUTPUT
+          [[ $idf_board =~ ^esp32(c3|s3)?$ ]] && echo "qemu=true" >> $GITHUB_OUTPUT
 
       - name: Run ESP32 project in QEmu
+        if: steps.idfbuild.outputs.qemu == 'true'
         uses: tobozo/esp32-qemu-sim@main
         with:
           debug: true