Add qlty coverage action

Author: Umekawa

.github/workflows/test.yml

@@ -32,3 +32,18 @@ jobs:
           bundler-cache: true
       - name: Test
         run: bundle exec rake
+
+  qlty:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+      - uses: ruby/setup-ruby@13e7a03dc3ac6c3798f4570bfead2aed4d96abfb # v1.244.0
+        with:
+          ruby-version: '3.2'
+          bundler-cache: true
+      - name: Test
+        run: bundle exec rake
+      - uses: qltysh/qlty-action/coverage@a19242102d17e497f437d7466aa01b528537e899 # v2.2.0
+        with:
+          token: ${{secrets.QLTY_COVERAGE_TOKEN}}
+          files: ./coverage/coverage.json