dev: Add Rubocop for linting

.github/workflows/ruby.yml

@@ -26,3 +26,16 @@ jobs:
           bundler-cache: true
 
       - run: bundle exec rspec
+
+      - uses: actions/checkout@v3
+
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: ruby/setup-ruby@v1
+        with:
+          # Match the minimum supported Ruby version in the gemspec.
+          ruby-version: '2.7'
+          bundler-cache: true
+
+      - run: bundle exec rubocop

.rubocop.yml

@@ -0,0 +1,15 @@
+require:
+ - rubocop-rspec
+
+AllCops:
+  NewCops: disable
+  # The target Ruby version must match the one in stytch.gemspec.
+  TargetRubyVersion: 2.7
+
+Layout: { Enabled: false }
+Metrics: { Enabled: false }
+Style: { Enabled: false }
+
+RSpec/DescribedClass: { Enabled: false }
+RSpec/ExampleLength: { Enabled: false }
+RSpec/MultipleExpectations: { Enabled: false }

stytch.gemspec

@@ -30,4 +30,6 @@ Gem::Specification.new do |spec|
   spec.add_dependency 'jwt', '>= 2.3.0'
 
   spec.add_development_dependency 'rspec', '~> 3.11.0'
+  spec.add_development_dependency 'rubocop', '1.56.3'
+  spec.add_development_dependency 'rubocop-rspec', '2.24.0'
 end