[TASK] Migrate copy'n'paste detector to GitHub actions (#222)

Co-authored-by: Łukasz Uznański <l.uznanski@macopedia.com>

.github/workflows/ci.yml

@@ -45,6 +45,15 @@ jobs:
         uses: actions/checkout@v2
       - name: "Run YAML lint"
         uses: TYPO3-Continuous-Integration/TYPO3-CI-YAML-Lint@v1
+  copypaste-detector:
+    name: "Copy'n'paste detector"
+    runs-on: ubuntu-20.04
+    needs: php-lint
+    steps:
+      - name: "Checkout"
+        uses: actions/checkout@v2
+      - name: "Run the Copy'n'paste Detector"
+        uses: TYPO3-Continuous-Integration/TYPO3-CI-Copy-Paste-Detector@v1
   code-quality:
     name: "Code quality checks"
     runs-on: ubuntu-20.04
@@ -76,7 +85,6 @@ jobs:
           - "json:lint"
           - "php:sniff"
           - "php:codestyle"
-          - "php:copypaste"
           - "php:stan"
           - "composer:normalize"
         php-version: