Add ci/cd

.gitlab-ci.yml

+stages:
+  - build
+  - test
+  - sast
+
+build:
+  tags:
+    - rpi4-64
+  image: arm32v7/node:15
+  stage: build
+  artifacts:
+    expire_in: 1 week
+    paths:
+      - dist/
+  before_script:
+    - yarn install
+  script:
+    - yarn run build
+
+test:
+  tags:
+    - rpi4-64
+  image: arm32v7/node:15
+  stage: test
+  needs:
+    - job: build
+  before_script:
+    - yarn install
+  script:
+    - yarn run jest
+
+sast:
+  tags:
+    - rpi4-64
+  image: arm32v7/node:15
+  stage: sast
+  needs:
+    - job: build
+  before_script:
+    - yarn install
+  script:
+    - yarn run lint