Add initial standard code scanning workflow

.github/workflows/code-scanning.yml

@@ -0,0 +1,44 @@
+# License: LGPL-3.0-or-later
+# based on the Rubocop code scanning template from GithubS
+name: "Run Standardrb"
+
+on:
+  push:
+    branches: [ "supporter_level_goal" ]
+  pull_request:
+  schedule:
+    - cron: '19 23 * * 1'
+
+jobs:
+  rubocop:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    - uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{ matrix.ruby }}
+        bundler-cache: true
+
+    # This step is not necessary if you add the gem to your Gemfile
+    - name: Install Code Scanning integration
+      run: bundle add code-scanning-rubocop --version 0.6.1 --skip-install
+
+    - name: Install dependencies
+      run: bundle install
+
+    - name: Standardrb run
+      run: |
+        bash -c "
+          bin/standardrb --require code_scanning --format CodeScanning::SarifFormatter -o standard.sarif
+          [[ $? -ne 2 ]]
+        "
+
+    - name: Upload Sarif output
+      uses: github/codeql-action/upload-sarif@v3
+      with:
+        sarif_file: standard.sarif