Add GitHub Action for building

Author: witcher112

.github/workflows/build.yml

@@ -0,0 +1,18 @@
+name: Build
+
+on:
+  push:
+    branches:
+      - 'master'
+
+jobs:
+  publish-windows:
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+      - run: cargo build --release --target x86_64-pc-windows-msvc
+      - uses: actions/upload-artifact@v4
+        with:
+          name: windows-artifact
+          path: target/x86_64-pc-windows-msvc/release/runner2.exe