add ci github action, presetup command to install deps needed to run setup script

Author: ilyasudakov

.github/workflows/ci.yml

@@ -0,0 +1,24 @@
+name: CI
+
+on:
+  pull_request:
+    branches: [main]
+
+  # Allows to run job manually
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      # Checkout repo
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 12
+      - name: Install all dependencies
+        run: npm i
+      - name: Run all test cases
+        run: npm run test -- --silent
+      - name: Build app
+        run: npm run start

package.json

@@ -15,6 +15,7 @@
     "test": "jest",
     "test:watch": "jest --watch",
     "test:coverage": "jest --coverage",
+    "presetup": "npm i shelljs compare-versions",
     "setup": "node ./bin/setup.js"
   },
   "keywords": [],