create ruby workflow (#74)

* create ruby workflow

* add step for dependencies

* bump ruby version

* Set up Ruby action in web directory

.github/workflows/ruby.yml

@@ -0,0 +1,33 @@
+name: Ruby
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+    defaults:
+      run:
+        working-directory: ./web
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        ruby-version: ['3.3', '3.4']
+
+    steps:
+    - uses: actions/checkout@v5
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{ matrix.ruby-version }}
+        bundler-cache: true
+        working-directory: ./web
+    - name: Set up dependencies 
+      run: bundle install
+    - name: Run tests
+      run: bundle exec rspec