ci: setting up codeql (#244)

.github/codeql/config.yml

@@ -0,0 +1,2 @@
+paths-ignore:
+  - '**/node_modules/**'

.github/workflows/codeql-analysis.yml

@@ -0,0 +1,38 @@
+name: "Code scanning - action"
+
+on:
+  push:
+  pull_request:
+  schedule:
+    - cron: '0 12 * * 1'
+
+jobs:
+  CodeQL-Build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+      with:
+        # We must fetch at least the immediate parents so that if this is
+        # a pull request then we can checkout the head.
+        fetch-depth: 2
+
+    # If this run was triggered by a pull request event, then checkout
+    # the head of the pull request instead of the merge commit.
+    - run: git checkout HEAD^2
+      if: ${{ github.event_name == 'pull_request' }}
+
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v1
+      with:
+        languages: javascript
+        config-file: ./.github/codeql/config.yml
+
+    - name: Install Dependencies
+      run: npm ci
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v1