Merge pull request #32 from Kotlin/adam/add-gradle-build-gha

Create GitHub Action to check `gradle build` works

.github/workflows/build-project.yml

@@ -0,0 +1,62 @@
+name: Build Project
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+  workflow_dispatch:
+    inputs:
+      checkout-ref:
+        description: "The branch, tag or SHA to checkout. See actions/checkout 'ref'."
+        required: false
+        type: string
+
+concurrency:
+  group: "Build Project: ${{ github.workflow }} @ ${{ github.event.pull_request.head.label || github.head_ref || github.ref }}"
+  cancel-in-progress: true
+
+jobs:
+
+  validate-gradle-wrapper:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout the repo
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ inputs.checkout-ref || github.ref }}
+
+      - name: Validate Gradle Wrapper
+        uses: gradle/actions/wrapper-validation@v3
+
+
+  build-gradle:
+    needs: validate-gradle-wrapper
+    strategy:
+      matrix:
+        os:
+          - macos-latest
+          - ubuntu-latest
+          - windows-latest
+      fail-fast: true
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Checkout the repo
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ inputs.checkout-ref || github.ref }}
+
+      - name: Setup JDK
+        uses: actions/setup-java@v4
+        with:
+          distribution: "temurin"
+          java-version: "21"
+
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@v3
+        with:
+          gradle-home-cache-cleanup: true
+          cache-encryption-key: ${{ secrets.GRADLE_CONFIGURATION_CACHE_ENCRYPTION_KEY }}
+
+      - name: Run tests
+        run: ./gradlew build --scan --stacktrace