Limit number of cleanup PRs

currently an unlimited number of PRs are created for cleanups.
Especially when enabling new cleanups this can lead to a massive amount
of PRs created what are hard to manage and probably block the CI.

This now enables a limit of 10 open PRs at a time.

Author: laeubi

.github/workflows/cleanCode.yml

@@ -78,6 +78,22 @@ jobs:
       max-parallel: 1
       fail-fast: false
     steps:
+      - name: List number of open PRs
+        id: list-prs
+        run: |
+            json_output=$(gh pr list -l 'cleanup' -R $OWNER/$REPO -L 100 --json id)
+            echo "prs=$json_output" | tee -a "$GITHUB_OUTPUT"
+        env:
+          GH_TOKEN: ${{ secrets.token }}
+          OWNER: ${{ github.repository_owner }}
+          REPO: ${{ github.event.repository.name }}
+      - name: Cancel job if to much open PRs
+        if: fromJson(steps.list-prs.outputs.prs)[9] != null
+        run: |
+            gh run cancel ${{ github.run_id }}
+            gh run watch ${{ github.run_id }}
+        env:
+          GH_TOKEN: ${{ secrets.token }}
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
         with:
           fetch-depth: 0
@@ -108,7 +124,7 @@ jobs:
           xvfb-run mvn -B -ntp tycho-cleancode:quickfix@quickfixes
       - name: Create final PR description
         working-directory: ${{ matrix.bundles }}/target
-        if: ${{ hashFiles(format('{0}/target/quickfix.md', matrix.bundles)) != '' }} || ${{ hashFiles(format('{0}/target/cleanups.md', matrix.bundles)) != '' }} 
+        if: ${{ hashFiles(format('{0}/target/quickfix.md', matrix.bundles)) != '' || ${{ hashFiles(format('{0}/target/cleanups.md', matrix.bundles)) != '' }} 
         run: >-
           cat *.md > pr.md
       - name: Create Pull Request