Add problem matchers for RuboCop and minitest

.github/eslint-stylish.json

@@ -12,8 +12,8 @@
           "line": 1,
           "column": 2,
           "severity": 3,
-          "message": 4,
           "code": 5,
+          "message": 4,
           "loop": true
         }
       ]

.github/minitest.json

@@ -0,0 +1,19 @@
+{
+  "problemMatcher": [
+    {
+      "owner": "minitest",
+      "pattern": [
+        {
+          "regexp": "^.*?\\[(.*?):(\\d+)\\]:$",
+          "file": 1,
+          "line": 2
+        },
+        {
+          "regexp": "^\\s*((?:Expected|Actual).*)$",
+          "message": 1,
+          "loop": true
+        }
+      ]
+    }
+  ]
+}

.github/rubocop.json

@@ -0,0 +1,17 @@
+{
+  "problemMatcher": [
+    {
+      "owner": "rubocop",
+      "pattern": [
+        {
+          "regexp": "^(.*?\\.rb):(\\d+):(\\d+):.*?:\\s*(.*?):\\s*(.*)$",
+          "file": 1,
+          "line": 2,
+          "column": 3,
+          "code": 4,
+          "message": 5
+        }
+      ]
+    }
+  ]
+}

.github/workflows/build.yml

@@ -10,17 +10,21 @@ jobs:
     steps:
     - name: Checkout
       uses: actions/checkout@v2
+    - name: CocoaPods
+      run: |
+        bundle install
+        echo "::add-matcher::.github/rubocop.json"
+        bundle exec rubocop
+        echo "::remove-matcher owner=rubocop::"
+        echo "::add-matcher::.github/minitest.json"
+        bundle exec ruby -Ilib:test test/test_test_app.rb
+        echo "::remove-matcher owner=minitest::"
     - name: JavaScript
       run: |
         yarn
         echo "::add-matcher::.github/eslint-stylish.json"
         yarn lint:js
         echo "::remove-matcher owner=eslint-stylish::"
-    - name: Ruby
-      run: |
-        bundle install
-        bundle exec rubocop
-        bundle exec ruby -Ilib:test test/test_test_app.rb
   iOS:
     runs-on: macos-latest
     steps: