Add github workflow for Java JNI project

.github/workflows/java.yml

@@ -0,0 +1,49 @@
+name: Build and Run Java JNI Tests
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    paths:
+      - java/**
+      - .github/workflows/java.yml
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        include:
+          - os: ubuntu-22.04
+            java-version: 8
+          - os: ubuntu-22.04
+            java-version: 11
+          - os: ubuntu-22.04
+            java-version: 17
+    runs-on: ${{ matrix.os }}
+    name: ${{ matrix.os }} + Java ${{ matrix.java-version }}
+    defaults:
+      run:
+        working-directory: ./java
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - uses: Swatinem/rust-cache@v2
+        with:
+          workspaces: java/java-jni
+      - name: Install dependencies
+        run: |
+          sudo apt update
+          sudo apt install -y protobuf-compiler libssl-dev
+      - name: Install Java
+        uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: ${{ matrix.java-version }}
+          cache: 'maven'
+
+      - name: Build with Maven
+        run: mvn package -DskipTests=true
+
+      - name: Running tests
+        run: mvn test
+