Add workflow to test action

.github/workflows/ci.yml

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+name: CI
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+  pull_request:
+  schedule:
+    - cron: "0 5 * * 1"
+
+jobs:
+  build:
+    name: Build test configuration for esphome:${{ matrix.esphome-version }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        esphome-version:
+          - stable
+          # - beta
+          # - dev
+    steps:
+      - name: Checkout
+        uses: actions/[email protected]
+      - name: Run action
+        uses: ./
+        id: esphome-build
+        with:
+          yaml_file: .github/workflows/test_files/test.yaml
+          version: ${{ matrix.esphome-version }}
+          platform: linux/amd64
+          cache: true
+          release_summary: "Test release summary"
+          release_url: "https://github.com/esphome/build-action"
+      - run: echo ${{ steps.esphome-build.outputs.version }} > ${{ steps.esphome-build.outputs.name }}/version
+      - name: Upload ESPHome binary
+        uses: actions/[email protected]
+        with:
+          name: build-output-files
+          path: ${{ steps.esphome-build.outputs.name }}
+
+  # verify: # TODO

.github/workflows/test_files/test.yaml

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+esphome:
+  name: test
+
+esp32:
+  board: esp32dev