Add GitHub Actions workflow for ZScript build

Author: zs-3

.github/workflows/zsc-build.yml

@@ -0,0 +1,106 @@
+name: Build and Release ZScript
+
+on:
+  push:
+    tags:
+      - "v*"
+
+permissions:
+  contents: write
+
+jobs:
+  build:
+    name: Build ${{ matrix.name }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          # ---------- LINUX ----------
+          - os: ubuntu-latest
+            name: linux-x64
+            target: bun-linux-x64
+            archive: tar.gz
+            ext: ""
+
+          - os: ubuntu-latest
+            name: linux-x64-musl
+            target: bun-linux-x64-musl
+            archive: tar.gz
+            ext: ""
+
+          - os: ubuntu-latest
+            name: linux-arm64
+            target: bun-linux-arm64
+            archive: tar.gz
+            ext: ""
+
+          - os: ubuntu-latest
+            name: linux-arm64-musl
+            target: bun-linux-arm64-musl
+            archive: tar.gz
+            ext: ""
+
+          # ---------- WINDOWS ----------
+          - os: windows-latest
+            name: windows-x64
+            target: bun-windows-x64
+            archive: zip
+            ext: ".exe"
+
+          # ---------- MACOS ----------
+          - os: macos-latest
+            name: macos-x64
+            target: bun-darwin-x64
+            archive: tar.gz
+            ext: ""
+
+          - os: macos-latest
+            name: macos-arm64
+            target: bun-darwin-arm64
+            archive: tar.gz
+            ext: ""
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Install Bun
+        uses: oven-sh/setup-bun@v1
+        with:
+          bun-version: latest
+
+      - name: Install dependencies
+        working-directory: compiler
+        run: bun install
+
+      - name: Build zsc binary
+        working-directory: compiler
+        run: |
+          mkdir -p dist
+          bun build zsc.js \
+            --compile \
+            --target=${{ matrix.target }} \
+            --outfile dist/zsc${{ matrix.ext }}
+
+      # -------- Linux / macOS --------
+      - name: Package (tar.gz)
+        if: matrix.archive == 'tar.gz'
+        working-directory: compiler/dist
+        run: |
+          chmod +x zsc
+          tar -czf zsc-${{ matrix.name }}.tar.gz zsc
+
+      # -------- Windows --------
+      - name: Package (zip)
+        if: matrix.archive == 'zip'
+        working-directory: compiler/dist
+        shell: pwsh
+        run: |
+          Compress-Archive zsc.exe zsc-${{ matrix.name }}.zip
+
+      - name: Upload release asset
+        uses: softprops/action-gh-release@v1
+        with:
+          files: |
+            compiler/dist/zsc-${{ matrix.name }}.*