chmod +x gradlew and add auto update workflow

Author: Lassebq

.github/workflows/update.yaml

@@ -0,0 +1,56 @@
+name: Update BetterJSONs
+
+on:
+  workflow_dispatch:
+  schedule:
+          # ┌───────────── minute (0 - 59)
+          # │ ┌───────────── hour (0 - 23)
+          # │ │ ┌───────────── day of the month (1 - 31)
+          # │ │ │ ┌───────────── month (1 - 12 or JAN-DEC)
+          # │ │ │ │ ┌───────────── day of the week (0 - 6 or SUN-SAT)
+          # │ │ │ │ │
+          # * * * * *
+   - cron: "30 17 * * 3"
+
+jobs:
+  update:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout this repo
+      uses: actions/checkout@v4
+    - name: Build with Gradle
+      run: ./gradlew build
+    - name: Checkout BetterJSONs repo
+      uses: actions/checkout@v4
+      with:
+          repository: MCPHackers/BetterJSONs
+          path: BetterJSONs
+          ssh-key: ${{ secrets.BETTERJSONS_SSH }}
+    - name: Set up JDK
+      uses: actions/setup-java@v4
+      with:
+        java-version: '17'
+        distribution: 'temurin'
+    - name: Run update
+      env:
+          CI_COMMIT_MESSAGE: Automatic update
+          CI_COMMIT_AUTHOR: github-actions[bot]
+          CI_COMMIT_EMAIL: 41898282+github-actions[bot]@users.noreply.github.com
+      shell: bash
+      run: |
+          cd BetterJSONs
+          git pull
+          java -jar ../build/libs/versionjsons-1.0.jar --update --path .
+          git config --global user.name "${{ env.CI_COMMIT_AUTHOR }}"
+          git config --global user.email "${{ env.CI_COMMIT_EMAIL }}"
+          if [[ `git status --porcelain --untracked-files=no` ]]; then
+            # Changes
+            git add .
+            git commit -m "${{ env.CI_COMMIT_MESSAGE }}"
+            git push
+          else
+            # No changes
+            echo "no changes to latest posts"
+            exit 0
+          fi
+