Preliminary workflow configuration.

.github/codeql-config.yml

+name: "CodeQL config for Jussi"
+
+languages: python
+
+queries:
+  - name: Extended Security
+    uses: security-extended
+  - name: Security and Quality
+    uses: security-and-quality

.github/workflows/codeql-analysis.yml

+name: "CodeQL"
+
+on:
+  push:
+    branches: [ develop ]
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [ 'python' ]
+        python-version: [3.6, 3.8]
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+    - run: git fetch --prune --unshallow
+    
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install .
+
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v1
+      with:
+        languages: ${{ matrix.language }}
+        config-file: ./.github/codeql-config.yml
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v1