Add ci job to run parsers test

.github/workflows/test-parsers.yml

@@ -0,0 +1,28 @@
+name: Parsers test
+
+on:
+  pull_request:
+    branches: [ "master" ]
+    paths:
+      - 'src/main/kotlin/org/koitharu/kotatsu/parsers/site'
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-java@v3
+        with:
+          java-version: '11'
+          distribution: 'temurin'
+          cache: 'gradle'
+      - run: ./gradlew :test --tests "org.koitharu.kotatsu.parsers.MangaParserTest"
+      - uses: actions/upload-artifact@v3
+        with:
+          name: Report
+          path: build/reports/tests/test