chore: add semi-automated publishing with release-please (#152)

Author: vonovak

.github/workflows/release.yml

@@ -0,0 +1,32 @@
+# adapted from https://github.com/googleapis/release-please-action#automating-publication-to-npm
+on:
+  push:
+    branches:
+      - main
+name: release-please
+jobs:
+  release-please:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: googleapis/release-please-action@v4
+        id: release
+        with:
+          release-type: node
+      # The logic below handles the npm publication:
+      - uses: actions/checkout@v4
+        # these if statements ensure that a publication only occurs when
+        # a new release is created:
+        if: ${{ steps.release.outputs.release_created }}
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+          registry-url: 'https://registry.npmjs.org'
+        if: ${{ steps.release.outputs.release_created }}
+      - run: corepack enable
+        if: ${{ steps.release.outputs.release_created }}
+      - run: yarn --immutable
+        if: ${{ steps.release.outputs.release_created }}
+      - run: npm publish
+        env:
+          NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}
+        if: ${{ steps.release.outputs.release_created }}