Add publish workflow and rename deno.yml

Author: szuend

.github/workflows/deno.yml renamed to .github/workflows/ci.yml

@@ -1,7 +1,7 @@
 # This workflow will install Deno then run `deno lint` and `deno test`.
 # For more information see: https://github.com/denoland/setup-deno
 
-name: Deno
+name: Lint and test
 
 on:
   push:

.github/workflows/publish.yml

@@ -0,0 +1,29 @@
+# Publish new versions, but run the step only if 'deno.json' changed.
+
+name: Publish
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - deno.json
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: read
+      id-token: write
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Deno
+        uses: denoland/setup-deno@v2
+        with:
+          deno-version: v2.x
+
+      - name: Publish package
+        run: deno publish