Add basic GitLab CI

.gitlab-ci.yml

+include:
+  - template: Security/License-Scanning.gitlab-ci.yml
+
+pages:
+  needs: []
+  image: node:14-alpine
+  stage: deploy
+  script:
+    - npm install
+    - npm run build
+  artifacts:
+    paths:
+      - public
+  only:
+    - master