Move release.yml to .github/workflows/ for GitHub Actions

Author: Julian

.github/workflows/release.yml

@@ -0,0 +1,71 @@
+name: Build and Release
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+permissions:
+  contents: write
+
+jobs:
+  build:
+    name: Build on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        include:
+          - os: ubuntu-latest
+            asset_name: fracsim-linux-amd64
+            icon: 🐧   # Linux 图标
+          - os: windows-latest
+            asset_name: fracsim-windows-amd64.exe
+            icon: 🪟   # Windows 图标
+          - os: macos-latest
+            asset_name: fracsim-macos-arm64
+            icon: 🍎   # macOS 图标
+
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.10'
+      - run: pip install pyinstaller mmh3
+      - run: pyinstaller --onefile --name fracsim ./fracsim/main.py
+      - name: Upload artifact (prepare for release)
+        uses: actions/upload-artifact@v4
+        with:
+          name: ${{ matrix.asset_name }}
+          path: ./dist/fracsim${{ matrix.os == 'windows-latest' && '.exe' || '' }}
+
+  release:
+    name: Create Release
+    needs: build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Download all artifacts
+        uses: actions/download-artifact@v4
+        with:
+          path: ./artifacts
+
+      - name: Generate Release Body
+        id: body
+        run: |
+          cat > release_body.md << EOF
+          ## 📥 Downloads
+          | Platform | Download Link |
+          |------|----------|
+          | 🐧 Linux | [fracsim-linux-amd64](./attachments/fracsim-linux-amd64) |
+          | 🪟 Windows | [fracsim-windows-amd64.exe](./attachments/fracsim-windows-amd64.exe) |
+          | 🍎 macOS | [fracsim-macos-arm64](./attachments/fracsim-macos-arm64) |
+          EOF
+          echo "body<<EOF" >> $GITHUB_OUTPUT
+          cat release_body.md >> $GITHUB_OUTPUT
+          echo "EOF" >> $GITHUB_OUTPUT
+
+      - name: Create Release and Upload Assets
+        uses: softprops/action-gh-release@v2
+        with:
+          files: ./artifacts/**/*
+          body_path: release_body.md