create versionci.yml for ruby version matrix testing via github actions

.github/workflows/versionci.yml

@@ -0,0 +1,27 @@
+name: Version CI
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+jobs:
+  rubocop:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: "3.2.2"
+          bundler-cache: true
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        ruby: ["2.6.5", "2.7.7", "3.0.5", "3.1.3", "3.2.0", "3.2.2"]
+    steps:
+      - uses: actions/checkout@v3
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true
+      - run: bundle exec rspec