Publish gem on release (#88)

Author: almathew

.github/workflows/release.yml

@@ -0,0 +1,24 @@
+on:
+  release:
+    types: [published]
+
+jobs:
+  push:
+    name: Push gem to RubyGems.org
+    runs-on: ubuntu-latest
+
+    permissions: 
+        id-token: write
+        contents: write
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8
+        with:
+          persist-credentials: false
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@211ffaaa5f8dda97e9e8bca4e70d0fbaf2f8c41c
+        with:
+          bundler-cache: false
+          ruby-version: "3.3"
+
+      - uses: rubygems/release-gem@1c162a739e8b4cb21a676e97b087e8268d8fc40b