ci (#3)

* ci

.github/workflows/ci.yml

@@ -0,0 +1,50 @@
+name: Bindings Java CI
+
+on:
+  push:
+    branches:
+      - master
+    tags:
+      - '*'
+  pull_request:
+    branches:
+      - master
+
+permissions:
+  contents: read
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up JDK 21
+        uses: actions/setup-java@v4
+        with:
+          distribution: 'zulu'
+          java-version: '21'
+      - name: Build and check
+        working-directory: .
+        run: |
+          make java_run
+
+  test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os:
+          - ubuntu-latest
+          - macos-latest
+          - windows-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up JDK 8
+        uses: actions/setup-java@v4
+        with:
+          distribution: 'zulu'
+          java-version: '8'
+      - name: Build and test
+        working-directory: .
+        shell: bash
+        run: |
+          make java_run