Add GH actions workflow for testing [SDK-4456] (#718)

.github/workflows/main.yml

@@ -0,0 +1,41 @@
+name: CI
+on:
+    pull_request:
+      types:
+        - opened
+        - synchronize
+
+permissions: {}
+
+concurrency:
+    group: ${{ github.workflow }}-${{ github.ref }}
+    cancel-in-progress: ${{ github.ref == 'refs/heads/master' }}
+
+jobs:
+    test:
+        name: Run JS tests
+        runs-on: ubuntu-latest
+
+        env:
+            node: 'lts/*'
+
+        steps:
+            - name: Checkout
+              uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac
+
+            - name: Setup Node.js
+              uses: actions/setup-node@5e21ff4d9bc1a8cf6de233a3057d20ec6b3fb69d
+              with:
+                node-version: ${{ env.node }}
+                cache: 'yarn'
+
+            - name: Install dependencies
+              run: yarn install --frozen-lockfile
+
+            - name: Run tests
+              run: yarn run test:ci
+
+            - name: Upload coverage report
+              uses: codecov/codecov-action@eaaf4bedf32dbdc6b720b63067d99c4d77d6047d
+              with:
+                directory: coverage