Fix Karma run and add Publish action

.github/workflows/publish_to_npm.yml

@@ -0,0 +1,32 @@
+name: Publish to npm
+
+on:
+  release:
+    types: [created]
+
+jobs:
+  publish:
+    name: Publish to npm
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: 'lts/*'
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Build the library
+        run: npm run build-lib
+
+      - name: Publish to npm
+        working-directory: ./dist/angular-mydatepicker
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+        run: npm publish --access public