Add "Blender for Korman" and build/package process.

This will allow us to automate releases with the Blender 2.79
"experimenntal nightly" codebase. This is great because the newer
Blender uses Python 3.7 (instead of 3.5). This pulls from my fork of
Blender, which has a number of build improvements added on top.

.github/workflows/ci_build.yml

@@ -0,0 +1,96 @@
+name: CI Build
+on: [push, pull_request]
+
+jobs:
+  windows-build:
+    strategy:
+      matrix:
+        cfg:
+          - {
+              os: windows-2019,
+              generator: Visual Studio 16 2019,
+              arch: Win32,
+              str: windows-x86,
+              blender-url: "https://github.com/Hoikas/blender2.7/releases/download/blender2.79_20210808/blender-2.79.0-git20210808.d2e1ea3f63e3-windows32.zip",
+            }
+          - {
+              os: windows-2019,
+              generator: Visual Studio 16 2019,
+              arch: x64,
+              str: windows-x64,
+              blender-url: "https://github.com/Hoikas/blender2.7/releases/download/blender2.79_20210808/blender-2.79.0-git20210808.d2e1ea3f63e3-windows64.zip",
+            }
+
+    env:
+      CMAKE_GENERATOR: ${{ matrix.cfg.generator }}
+      CMAKE_GENERATOR_PLATFORM: ${{ matrix.cfg.arch }}
+
+    runs-on: ${{ matrix.cfg.os }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          path: korman
+
+      - name: Download Blender
+        run: |
+          curl --location "${{ matrix.cfg.blender-url }}" --output blender.zip
+          mkdir blender
+          7z x blender.zip -oblender -bsp1
+
+      - name: Build Standalone Korman
+        run: |
+          $BlenderSubDir = Split-Path -LeafBase $([System.URI]"${{ matrix.cfg.blender-url }}").Segments[-1]
+          korman/build.ps1 `
+            -Modern `
+            -BlenderDir "${{ github.workspace }}/blender/$BlenderSubDir" `
+            -NoInstaller -NoBlender
+
+      - name: Upload Standalone Korman
+        uses: actions/upload-artifact@v2
+        with:
+          name: korman-standalone-${{ matrix.cfg.str }}
+          path: build/package
+
+      - name: Build Korman+Blender Bundle
+        if: startsWith(github.ref, 'refs/tags')
+        run: |
+          Remove-Item -Recurse -Force build/package
+          korman/build.ps1 -Modern
+
+      - name: Upload Korman+Blender Bundle
+        if: startsWith(github.ref, 'refs/tags')
+        uses: actions/upload-artifact@v2
+        with:
+          name: korman-blender-${{ matrix.cfg.str }}
+          path: build/package
+
+  publish:
+    if: startsWith(github.ref, 'refs/tags')
+    needs: [windows-build]
+    runs-on: windows-2019
+
+    steps:
+      - name: Checkout Korman
+        uses: actions/checkout@v2
+        with:
+          path: korman
+
+      - name: Download Artifacts
+        id: download
+        uses: actions/download-artifact@v2
+        with:
+          path: artifacts
+
+      - name: Publish Release
+        run: |
+          korman/release.ps1 `
+            -Repository "${{ github.repository }}" `
+            -Token "${{ secrets.GITHUB_TOKEN }}" `
+            -UploadDir "${{ steps.download.outputs.download-path }}" `
+            -SubDirs @{
+              "korman-standalone-windows-x86" = "standalone"
+              "korman-standalone-windows-x64" = "standalone"
+              "korman-blender-windows-x86" = "bundled"
+              "korman-blender-windows-x64" = "bundled"
+            }