Merge pull request #36 from votca/stable_ci

CI: add create PR workflow

Author: junghans

.github/workflows/create-pr.yml

@@ -0,0 +1,36 @@
+name: Create PR
+on:
+  push:
+    branches:
+      - stable
+
+jobs:
+  PR:
+    name: Create
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@master
+        with:
+          ref: ${{ github.event.ref }}
+          fetch-depth: 0
+          token: ${{ secrets.VOTCA_BOT_TOKEN }}
+      - name: Try to merge master branch
+        run: |
+          git config --global user.name "Votca Bot"
+          git config --global user.email "github@votca.org"
+          git checkout -b stable_fixes
+          git merge origin/master || true
+          git push origin stable_fixes
+      - name: Create Pull Request
+        uses: actions/github-script@0.3.0
+        with:
+          github-token: ${{ secrets.VOTCA_BOT_TOKEN }}
+          script: |
+            github.pulls.create({
+              owner: 'votca',
+              repo: 'xtp-tutorials',
+              title: 'Fixes from stable',
+              head: 'stable_fixes',
+              base: 'master'
+            })