feat: added test workflow for pr

.github/workflows/merge.yaml

@@ -0,0 +1,19 @@
+name: Test
+
+on: [merge]
+
+jobs:
+  version:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+      - uses: actions/cache@v2
+        with:
+          path: '**/node_modules'
+          key: ${{ runner.os }}-modules-${{ hashFiles('**/package-lock.json') }}
+
+      - name: tests
+        run: npm cit