chore: add publish gem version on github actions

.github/workflows/publish.yaml

@@ -0,0 +1,41 @@
+name: Publish Gem
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    name: Ruby ${{ matrix.ruby }}
+    strategy:
+      matrix:
+        ruby:
+          - '3.2.2'
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: 3.2
+          bundler-cache: true
+
+      - name: Install bundler
+        run: gem install bundler
+
+      - name: Install dependencies
+        run: bundle install
+
+      - name: Build gem
+        run: gem build lennarb.gemspec
+
+      - name: Push gem to RubyGems
+        env:
+          RUBYGEMS_API_KEY: ${{ secrets.RUBYGEMS_API_KEY }}
+        run: |
+          gem push lennarb-*.gem