[CI] Add GitHub Actions

.github/workflows/main.yml

@@ -0,0 +1,31 @@
+name: main
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: windows-latest
+    strategy:
+      matrix:
+        cpu_arch: [SSE2, AVX, AVX2, AVX512]
+    steps:
+    - uses: actions/checkout@master
+
+    - name: Setup
+      run: .\xb setup
+
+    - name: Build
+      run: .\xb build --cpu_arch=${{matrix.cpu_arch}} --target=src\xenia-app --target=tests\xenia-cpu-ppc-tests --target=src\xenia-vfs-dump
+
+    - name: Prepare artifacts
+      run: |
+          robocopy build\bin\Windows\Release artifacts xenia.exe xenia-vfs-dump.exe
+          robocopy . artifacts LICENSE
+          if errorlevel 8 exit /b 1
+          exit /b 0
+      shell: cmd
+
+    - uses: actions/upload-artifact@master
+      with:
+        name: xenia-canary-${{matrix.cpu_arch}}
+        path: artifacts