Add CI workflow

Author: ladvoc

.github/workflows/ci.yml

@@ -0,0 +1,42 @@
+name: CI
+on:
+  workflow_dispatch:
+  pull_request:
+  push:
+    branches: [main]
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+jobs:
+  # Based on action from https://github.com/espressif/esp-bsp/
+  build-examples:
+    strategy:
+      matrix:
+        include:
+        - { idf: latest, parallel_count: 5, parallel_index: 1 }
+        - { idf: release-v5.4, parallel_count: 5, parallel_index: 2 }
+    name: Build Examples
+    runs-on: ubuntu-latest
+    container: espressif/idf:${{ matrix.idf }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with: { submodules: recursive }
+      - name: Get changed files
+        if: github.event_name == 'pull_request'
+        id: changed-files
+        uses: tj-actions/changed-files@v45
+        with: { separator: ';' } # Expected format for idf-build-apps
+      - name: Build examples
+        if: always()
+        shell: bash
+        env:
+          IDF_EXTRA_ACTIONS_PATH: "${{ github.workspace }}/examples"
+          ALL_CHANGED_FILES: ${{ (github.event_name != 'pull_request') && format(' ') || format('--modified-files=') }}${{ (github.event_name != 'pull_request') && format(' ') || steps.changed-files.outputs.all_modified_files }}
+        run: |
+          . ${IDF_PATH}/export.sh
+          pip install idf-component-manager==2.2.* ruamel.yaml idf-build-apps==2.4.3 --upgrade
+
+          echo "Files changed: "${{env.ALL_CHANGED_FILES}}
+          idf-build-apps find ${{env.ALL_CHANGED_FILES}}
+          idf-build-apps build --parallel-count ${{ matrix.parallel_count }} --parallel-index ${{ matrix.parallel_index }} ${{env.ALL_CHANGED_FILES}} --collect-app-info build_info_${{ matrix.idf }}_${{ matrix.parallel_index }}.json