Added Windows build

.github/workflows/windows.yml

@@ -0,0 +1,75 @@
+name: Windows Builds
+on:
+  push:
+    branches: [ master, github_actions ]
+  pull_request:
+    branches: [ master ]
+
+# Global Cache Settings
+# SCONS_CACHE for windows must be set in the build environment
+env:
+  GODOT_BASE_BRANCH: 3.2
+  SCONS_CACHE_MSVC_CONFIG: true
+  SCONS_CACHE_LIMIT: 4096
+
+jobs:
+  windows-editor:
+    # Windows 10 with latest image
+    runs-on: "windows-latest"
+
+    # Windows Editor - checkout with the plugin
+    name: Editor (target=release_debug, tools=yes, tests=yes)
+
+    steps:
+      # Clone Godot
+      - uses: actions/checkout@v2
+        with:
+          repository: godotengine/godot
+          ref: 3.2
+
+      # Clone our module under the correct directory
+      - uses: actions/checkout@v2
+        with:
+          path: modules/voxel
+
+      # Upload cache on completion and check it out now
+      # Editing this is pretty dangerous for Windows since it can break and needs to be properly tested with a fresh cache.
+      - name: Load .scons_cache directory
+        id: windows-editor-cache
+        uses: RevoluPowered/cache@v2.1
+        with:
+          path: /.scons_cache/
+          key: ${{github.job}}-${{env.GODOT_BASE_BRANCH}}-${{github.ref}}-${{github.sha}}
+          restore-keys: |
+            ${{github.job}}-${{env.GODOT_BASE_BRANCH}}-${{github.ref}}-${{github.sha}}
+            ${{github.job}}-${{env.GODOT_BASE_BRANCH}}-${{github.ref}}
+            ${{github.job}}-${{env.GODOT_BASE_BRANCH}}
+
+      # Use python 3.x release (works cross platform; best to keep self contained in it's own step)
+      - name: Set up Python 3.x
+        uses: actions/setup-python@v2
+        with:
+          # Semantic version range syntax or exact version of a Python version
+          python-version: '3.x'
+          # Optional - x64 or x86 architecture, defaults to x64
+          architecture: 'x64'
+
+      # Setup scons, print python version and scons version info, so if anything is broken it won't run the build.
+      - name: Configuring Python packages
+        run: |
+          python -c "import sys; print(sys.version)"
+          python -m pip install scons pywin32
+          python --version
+          scons --version
+
+      # We should always be explicit with our flags usage here since it's gonna be sure to always set those flags
+      - name: Compilation
+        env:
+          SCONS_CACHE: /.scons_cache/
+        run: |
+          scons -j2 verbose=yes warnings=all werror=yes platform=windows tools=yes tests=yes target=release_debug
+
+      # Execute unit tests for the editor
+      - name: Unit Tests
+        run: |
+          ./bin/godot.windows.opt.tools.64.exe --test