Include benchmarks in PR validation: both JMH and Swift

Author: ktoso

.github/workflows/pull_request.yml

@@ -69,6 +69,9 @@ jobs:
         run: |
           ./gradlew build -x test --no-daemon # just build
           ./gradlew build --info --no-daemon
+      - name: Gradle build (benchmarks)
+        run: |
+          ./gradlew compileJmh --info --no-daemon
 
   test-swift:
     name: Swift tests (swift:${{ matrix.swift_version }} jdk:${{matrix.jdk_vendor}} os:${{ matrix.os_version }})
@@ -130,3 +133,5 @@ jobs:
       - name: Build (Swift) Sample Apps
         run: |
           find Samples/ -name Package.swift -maxdepth 2 -exec swift build --package-path $(dirname {}) \;;
+      - name: Build (Swift) Benchmarks
+        run: "swift package --package-path Benchmarks/ benchmark list"