Add action for slic configuration

configure-slic/README.md

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+# Configure slic
+
+The composite action prepares the environment for running the tests with [slic](https://github.com/stellarwp/slic).
+
+## Inputs
+
+| Name            | Required | Default | Description                                                                                                                                                                                                                                                                                   |
+|-----------------|----------|---------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| `wp_version`    | no       | ''      | If it's not provided the [default slic WordPress version](https://github.com/stellarwp/slic/blob/7e79022ce53adfcad514f09528fcb2d204b9e77b/.github/workflows/publish-wordpress-docker-image.yml#L19) will be used. Any value supported by `wp core update` `--version` argument can be passed. |
+| `airplane_mode` | no       | 'on'    | If airplane mode enabled no external files are loaded or HTTP requests performed. To disable airplane mode pass `off`.                                                                                                                                                                        |
+
+
+## Workflow example
+
+```yaml
+name: Automated Testing
+
+on:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  tests:
+    name: Tests
+    runs-on: ubuntu-latest
+    steps:
+      - name: Clone repository
+        uses: actions/checkout@v4
+
+      - name: Configure slic
+        uses: stellarwp/github-actions/configure-slic@main
+        with:
+          wp_version: 6.7
+
+      - name: Use package
+        run: |
+          ${SLIC_BIN} use ${{ github.event.repository.name }}
+
+      - name: Configure php
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: '7.4'
+          coverage: none
+          tools: stellarwp/pup
+
+      - name: Configure Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version-file: '.nvmrc'
+          cache: 'npm'
+
+      - name: Build
+        run: |
+          pup build --dev
+
+      - name: Run tests
+        run: ${SLIC_BIN} run --ext DotReporter
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v4
+        if: ${{ failure() }}
+        with:
+          name: Tests failure output
+          path: ./tests/_output/**
+          if-no-files-found: ignore
+```

configure-slic/action.yml

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+name: Configure slic
+description: Installs and configures slic
+
+inputs:
+  wp_version:
+    required: false
+    default: ''
+    description: WordPress version to be installed
+  airplane_mode:
+    required: false
+    default: 'on'
+    description: Airplane mode, no external connections (on/off)
+
+runs:
+  using: composite
+  steps:
+    - name: Checkout slic
+      uses: actions/checkout@v4
+      with:
+        repository: stellarwp/slic
+        ref: main
+        path: slic
+        fetch-depth: 1
+
+    - name: Set up slic env vars
+      shell: bash
+      run: |
+        echo "SLIC_BIN=${GITHUB_WORKSPACE}/slic/slic" >> $GITHUB_ENV
+        echo "SLIC_WP_DIR=${GITHUB_WORKSPACE}/slic/_wordpress" >> $GITHUB_ENV
+        echo "SLIC_WORDPRESS_DOCKERFILE=Dockerfile.base" >> $GITHUB_ENV
+
+    - name: Set run context for slic
+      shell: bash
+      run: echo "SLIC=1" >> $GITHUB_ENV && echo "CI=1" >> $GITHUB_ENV
+
+    - name: Start ssh-agent
+      shell: bash
+      run: |
+        mkdir -p "${HOME}/.ssh";
+        ssh-agent -a /tmp/ssh_agent.sock;
+
+    - name: Export SSH_AUTH_SOCK env var
+      shell: bash
+      run: echo "SSH_AUTH_SOCK=/tmp/ssh_agent.sock" >> $GITHUB_ENV
+
+    - name: Set up slic for CI
+      shell: bash
+      run: |
+        cd ${GITHUB_WORKSPACE}/..
+        ${SLIC_BIN} here
+        ${SLIC_BIN} interactive off
+        ${SLIC_BIN} build-prompt off
+        ${SLIC_BIN} build-subdir off
+        ${SLIC_BIN} xdebug off
+        ${SLIC_BIN} debug on
+        ${SLIC_BIN} info
+        ${SLIC_BIN} config
+
+    - name: Update WordPress version
+      if: ${{ inputs.wp_version != '' }}
+      shell: bash
+      run: |
+        ${SLIC_BIN} wp core update --version=${{ inputs.wp_version }} --force
+        ${SLIC_BIN} wp core update-db
+        ${SLIC_BIN} wp core version
+
+    - name: Enable airplane mode
+      if: ${{ inputs.airplane_mode == 'on' }}
+      shell: bash
+      run: |
+        ${SLIC_BIN} airplane-mode on