IBX-9627: [GHA] Created Rector PHP reusable workflow (#56)

For more details see https://issues.ibexa.co/browse/IBX-9627 and #56

Key changes:

* [GHA] Created Rector PHP reusable workflow

.github/workflows/rector.yml

@@ -0,0 +1,40 @@
+name: Rector PHP
+
+on:
+    workflow_call:
+        secrets:
+            SATIS_NETWORK_KEY:
+                required: false
+            SATIS_NETWORK_TOKEN:
+                required: false
+            TRAVIS_GITHUB_TOKEN:
+                required: false
+jobs:
+    rector:
+        runs-on: ubuntu-latest
+
+        steps:
+            - uses: actions/checkout@v4
+
+            - name: Setup PHP Action
+              uses: shivammathur/setup-php@v2
+              with:
+                  php-version: ${{ matrix.php }}
+
+            - if: env.SATIS_NETWORK_KEY != ''
+              name: 'Add composer keys for private packagist'
+              run: |
+                  composer config http-basic.updates.ibexa.co $SATIS_NETWORK_KEY $SATIS_NETWORK_TOKEN
+                  composer config github-oauth.github.com $TRAVIS_GITHUB_TOKEN
+              env:
+                  SATIS_NETWORK_KEY: ${{ secrets.SATIS_NETWORK_KEY }}
+                  SATIS_NETWORK_TOKEN: ${{ secrets.SATIS_NETWORK_TOKEN }}
+                  TRAVIS_GITHUB_TOKEN: ${{ secrets.TRAVIS_GITHUB_TOKEN }}
+
+            - name: 'Install Composer dependencies'
+              uses: ramsey/composer-install@v3
+              with:
+                  dependency-versions: highest
+
+            - name: 'Run rector'
+              run: vendor/bin/rector process --dry-run --ansi