[Build] Update GitHub actions to build natives

.github/workflows/ci-build.yml

@@ -1,13 +1,77 @@
 name: CI Build
 on: [ push, pull_request ]
 jobs:
-  gradle:
-    runs-on: ubuntu-latest
+  build-java:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+    name: Build Java [${{ matrix.os }}]
+    runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-java@v1
+      - name: Checkout repository
+        uses: actions/checkout@v2
+      - name: Set up Java 8
+        uses: actions/setup-java@v1
         with:
           java-version: 8
-      - uses: eskatos/gradle-command-action@v1
+      - name: Build
+        uses: eskatos/gradle-command-action@v1
         with:
           arguments: build
+  build-natives:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+        type: [win32, win64, linux32, linux64, mac64]
+        include:
+          - os: ubuntu-latest
+            type: win32
+            expected: imgui-binding/build/libsNative/windows32/imgui-java.dll
+          - os: ubuntu-latest
+            type: win64
+            expected: imgui-binding/build/libsNative/windows64/imgui-java64.dll
+          - os: ubuntu-latest
+            type: linux32
+            expected: imgui-binding/build/libsNative/linux32/libimgui-java.so
+          - os: ubuntu-latest
+            type: linux64
+            expected: imgui-binding/build/libsNative/linux64/libimgui-java64.so
+          - os: macos-latest
+            type: mac64
+            expected: imgui-binding/build/libsNative/macosx64/libimgui-java64.dylib
+        exclude:
+          - os: ubuntu-latest
+            type: mac64
+          - os: macos-latest
+            type: win32
+          - os: macos-latest
+            type: win64
+          - os: macos-latest
+            type: linux32
+          - os: macos-latest
+            type: linux64
+    name: Build Natives [${{ matrix.os }}]-[${{ matrix.type }}]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Checkout repository and submodules
+        uses: actions/checkout@v2
+        with:
+          submodules: recursive
+      - name: Set up Java 8
+        uses: actions/setup-java@v1
+        with:
+          java-version: 8
+      - name: Ant Version
+        run: ant -version
+      - if: matrix.os == 'ubuntu-latest'
+        name: Install MinGW-w64/GCC/G++
+        run: sudo apt-get install mingw-w64 gcc-multilib g++-multilib
+      - name: Build [${{ matrix.type }}]
+        uses: eskatos/gradle-command-action@v1
+        with:
+          arguments: :imgui-binding:generateLibs -Denvs=${{ matrix.type }} -Dlocal
+      - name: Check [${{ matrix.expected }}]
+        uses: andstor/file-existence-action@v1
+        with:
+          files: ${{ matrix.expected }}
+