ci: Add packaging and artifacts to Github Actions

Github Actions is going to replace AppVeyor in the long term for all release archives, simply because it integrates better with GitHub.

.github/workflows/main.yml

@@ -3,32 +3,42 @@ name: CI
 on: [push, pull_request]
 
 jobs:
-  build:
+  windows:
     strategy:
       matrix:
         os: [windows-2016, windows-2019]
         include:
           - os: windows-2016
             generator_32: "Visual Studio 15 2017"
-            generator_64: "Visual Studio 15 2017 Win64"
+            generator_64: "Visual Studio 15 2017"
             sysversion: "10.0.17763.0"
           - os: windows-2019
-            generator_32: 
+            generator_32: "Visual Studio 16 2019"
             generator_64: "Visual Studio 16 2019"
             sysversion: "10.0.18362.0"
     runs-on: ${{ matrix.os }}
     steps:
-    - name: Clone Repository
-      uses: actions/checkout@v1      
-    - name: Update Submodules
-      run: git submodule update --init --force --recursive
+    - name: "Clone Repository"
+      uses: actions/checkout@v1
     - name: Install Node.JS 10.x
       uses: actions/setup-node@v1
       with:
         node-version: 10
-    - name: Build
+    - name: Configure & Compile
       env:
         CMAKE_GENERATOR_32: ${{ matrix.generator_32 }}
         CMAKE_GENERATOR_64: ${{ matrix.generator_64 }}
         CMAKE_SYSTEM_VERSION: ${{ matrix.sysversion }}
       run: node ./ci/builder.js
+    - name: Package
+      env:
+        CMAKE_GENERATOR_32: ${{ matrix.generator_32 }}
+        CMAKE_GENERATOR_64: ${{ matrix.generator_64 }}
+      run: |
+        mkdir build/package
+        node ./ci/packager.js
+    - name: "Upload Artifacts"
+      uses: actions/upload-artifact@v1
+      with:
+        name: ${{ matrix.os }}
+        path: build/package