Move Envoy Client to client/ subdirectory

client/.github/workflows/maven.yml

@@ -0,0 +1,28 @@
+name: Java CI
+
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up JDK 11
+      uses: actions/setup-java@v1
+      with:
+        java-version: 11
+    - name: Cache Maven packages
+      uses: actions/cache@v2
+      with:
+        path: ~/.m2
+        key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
+        restore-keys: ${{ runner.os }}-m2
+    - name: Build with Maven
+      run: mvn -B package --file pom.xml
+    - name: Stage build artifacts
+      run: mkdir staging && cp target/*.jar staging
+    - uses: actions/upload-artifact@v1
+      with:
+        name: envoy-client-artifacts
+        path: staging