Add workflow file for icon review

.github/workflows/icon-review.yml

@@ -0,0 +1,53 @@
+name: Icon Review
+
+on:
+  pull_request:
+    paths:
+      - 'icons/*.svg'
+
+jobs:
+  icon-review:
+    name: Icon Review
+    runs-on: ubuntu-latest
+    env:
+      TARGET_BRANCH: ${{ github.event.pull_request.base.ref }}
+    steps:
+      - name: Checkout 🛎️
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Review SVG files 🔍
+        run: |
+          svgFiles=$(git diff origin/${{ env.TARGET_BRANCH }} --diff-filter=ACMRTUX  --name-only | grep '.svg$')
+          echo "SVG files changed: ${svgFiles}"
+          npx svg-icon-review ${svgFiles}
+
+      - name: Upload PNG to Repository ⬆️
+        run: |
+          mkdir -p review-images
+          mv ./preview.png review-images/${{ github.event.pull_request.number }}_${{ github.sha }}.png
+          git config user.name "GitHub Actions"
+          git config user.email "actions@github.com"
+          git fetch origin
+          git checkout -b review-images origin/review-images --no-track
+          git add review-images/
+          git commit -m "Add generated review image"
+          git push -u origin review-images
+
+      - name: Post review in PR ✍️
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const fs = require('fs');
+            const pngFilePath = './preview.png';
+            const commentBody = '## Preview \n\nThank you for creating a pull request. This preview shows you how your changes will look on the different themes: \n\n ![Generated Preview](https://raw.githubusercontent.com/' + context.repo.owner + '/' + context.repo.repo + '/' + 'review-images/review-images/${{ github.event.pull_request.number }}_${{ github.sha }}.png) \n\n You can find more information how to contribute in the [contribution guidelines](https://github.com/PKief/vscode-material-icon-theme/blob/main/CONTRIBUTING.md).';
+
+            github.rest.issues.createComment({
+              issue_number: context.issue.number,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              body: commentBody
+            })
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}