Add workflow for publishing to npm (#103)

.github/workflows/publish-package.yml

@@ -0,0 +1,33 @@
+name: Node.js Package
+
+on:
+    release:
+        types: [created]
+
+jobs:
+    build:
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/checkout@v4
+            - uses: actions/setup-node@v4
+              with:
+                  node-version: 20.x
+            - run: npm ci
+            - run: npm test
+
+    publish-gpr:
+        needs: build
+        runs-on: ubuntu-latest
+        permissions:
+            contents: read
+            packages: write
+        steps:
+            - uses: actions/checkout@v4
+            - uses: actions/setup-node@v4
+              with:
+                  node-version: '20.x'
+                  registry-url: 'https://npm.pkg.github.com'
+            - run: npm ci
+            - run: npm publish
+              env:
+                  NODE_AUTH_TOKEN: ${{secrets.GITHUB_TOKEN}}