adding github actions

.github/workflows/publish.yml

@@ -0,0 +1,20 @@
+name: Publish to npm
+on:
+    push:
+        branches: main
+
+jobs:
+    publish:
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/checkout@v4
+            - uses: actions/setup-node@v3
+              with:
+                  node-version: '20'
+            - run:
+              npm ci
+              npm run build
+            - uses: JS-DevTools/npm-publish@v3
+              with:
+                  access: public
+                  token: ${{ secrets.NPM_TOKEN }}