impr(ci): started to use github actions

.github/workflows/pull-requests

@@ -0,0 +1,59 @@
+// caching: https://docs.github.com/en/actions/using-workflows/caching-dependencies-to-speed-up-workflows
+
+name: CI
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  bootstrap:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+        with:
+          node-version: '18.x'
+          cache: 'npm'
+      - name: Install dependencies
+        run: npm ci
+
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+        with:
+          node-version: '18.x'
+          cache: 'npm'
+      - name: Test
+        run: npm test
+
+  coverage:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+        with:
+          node-version: '18.x'
+          cache: 'npm'
+      - run: sudo apt-get install libjq1 jq bc
+      - run: npm coverage
+      - run:
+          name: Publish coverage on PR
+          command: |
+            export PATH="$PATH:~/.local/bin"
+            bash ./scripts/post-coverage-to-github.sh $GITHUB_HEAD_REF
+
+  build-prod:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+        with:
+          node-version: '18.x'
+          cache: 'npm'
+      - name: Build
+        run: npm build