Github Actions

* Migrate to Github Actions
* Run integration tests on macos, linux, windows
* Rebuild yarn.lock because it was breaking
* Consume prebuilt, statically linked, conformance runner artifacts from an upstream project instead of checking them in
* Upgrade Gradle to 8.7-rc because of yet another file locking issue on windows (gradle/gradle#25752)

.github/actions/gradle-cache/action.yml

@@ -0,0 +1,11 @@
+name: Gradle cache
+description: Gradle caching logic shared across builds
+runs:
+  using: composite
+  steps:
+    - uses: actions/cache@v4
+      with:
+        path: |
+          ~/.gradle/caches
+          ~/.gradle/wrapper
+        key: gradle-${{ hashFiles('gradle/libs.versions.toml', 'gradle/wrapper/gradle-wrapper.properties') }}

.github/workflows/ci.yml

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+name: Build
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+    - uses: ./.github/actions/gradle-cache
+    - name: Set up java
+      uses: actions/setup-java@v3
+      with:
+        distribution: corretto
+        java-version: 17
+    - name: Set up js stuff
+      run: npm install [email protected] [email protected]
+    - name: Build and test
+      run: ./gradlew clean check publishToIntegrationRepository --stacktrace --no-daemon
+    - uses: actions/upload-artifact@v4
+      with:
+        name: integration-repository
+        path: build/repos/integration
+
+  integration:
+    needs: build
+    strategy:
+      matrix:
+        os: [ ubuntu-latest, windows-latest, macos-latest ]
+        kotlin: [ 1.8.22, 1.9.20 ]
+        jdk: [ 11, 17 ]
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+    - uses: ./.github/actions/gradle-cache
+    - name: Set up java
+      uses: actions/setup-java@v3
+      with:
+        distribution: corretto
+        java-version: ${{ matrix.jdk }}
+    - uses: actions/download-artifact@v4
+      with:
+        name: integration-repository
+        path: build/repos/integration
+    - name: Build and test
+      run: ./gradlew "-Dkotlin.version=${{ matrix.kotlin }}" clean build --stacktrace --no-daemon
+      working-directory: gradle-plugin-integration-test

.github/workflows/release.yml

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+name: Release
+
+on:
+  push:
+    tags:
+      - "[0-9]+\.[0-9]+\.[0-9A-Za-z-\.]+"
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        fetch-depth: 0
+    - uses: ./.github/actions/gradle-cache
+    - name: Set up java
+      uses: actions/setup-java@v3
+      with:
+        distribution: corretto
+        java-version: 17
+    - name: Publish
+      run: publishAllPublicationsToMavenCentral publishPlugins --no-configuration-cache --no-stacktrace
+      env:
+        PGP_KEY: ${{ secrets.PGP_KEY }}
+        PGP_PASSWORD: ${{ secrets.PGP_PASSWORD }}
+        ORG_GRADLE_PROJECT_mavenCentralUsername: ${{ secrets.OSSRH_USERNAME }}
+        ORG_GRADLE_PROJECT_mavenCentralPassword: ${{ secrets.OSSRH_PASSWORD }}
+        GRADLE_PORTAL_PUBLISH_KEY: ${{ secrets.GRADLE_PORTAL_PUBLISH_KEY }}
+        GRADLE_PORTAL_PUBLISH_SECRET: ${{ secrets.GRADLE_PORTAL_PUBLISH_SECRET }}
+        GRADLE_OPTS: "-Dorg.gradle.daemon=false -Dorg.gradle.internal.http.socketTimeout=120000 -Dorg.gradle.internal.network.retry.max.attempts=1 -Dorg.gradle.internal.publish.checksums.insecure=true"