Modify npm publish workflow for main branch push

Updated the npm publish workflow to trigger on push to the main branch and added steps for version bumping and building the project.

Author: AlgoFoe

.github/workflows/npm-publish.yml

@@ -0,0 +1,38 @@
+name: Publish to npm
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          registry-url: https://registry.npmjs.org/
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build project (optional)
+        run: npm run build --if-present
+
+      - name: Bump version
+        run: |
+          git config --global user.name "github-actions[bot]"
+          git config --global user.email "github-actions[bot]@users.noreply.github.com"
+          npm version patch -m "chore: bump version to %s [skip ci]"
+          git push origin main --follow-tags
+
+      - name: Publish to npm
+        run: npm publish --access public
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}