Enable GH Actions workflow

.github/workflows/rspec_tests.yml

@@ -0,0 +1,27 @@
+name: RSpec Tests
+
+on:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  rspec:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v2
+
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: 3.2
+
+      - name: Install Dependencies
+        run: |
+          gem install bundler
+          bundle install
+
+      - name: "Run RSpec Tests"
+        run: bundle exec rspec