Add danger. closes #955

Author: numbata

.github/workflows/danger.yml

@@ -0,0 +1,22 @@
+---
+name: danger
+on: pull_request
+
+jobs:
+  danger:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        fetch-depth: 100
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: 3.4
+        bundler-cache: true
+    - name: Run Danger
+      run: |
+        # the token is public, has public_repo scope and belongs to the grape-bot user owned by @dblock, this is ok
+        TOKEN=$(echo -n Z2hwX2lYb0dPNXNyejYzOFJyaTV3QUxUdkNiS1dtblFwZTFuRXpmMwo= | base64 --decode)
+        DANGER_GITHUB_API_TOKEN=$TOKEN bundle exec danger --verbose
+

Dangerfile

@@ -0,0 +1,4 @@
+# frozen_string_literal: true
+
+danger.import_dangerfile(gem: 'ruby-grape-danger')
+toc.check!

Gemfile

@@ -44,6 +44,7 @@ group :development, :test do
 end
 
 group :test do
+  gem 'ruby-grape-danger', '~> 0.2', require: false
   gem 'simplecov', require: false
   gem 'super_diff', require: false
 end