ci: add release workflow

Build and upload binaries for all supported platforms.

Signed-off-by: Miroslav Bajtoš <oss@bajtos.net>

.github/workflows/release.yml

@@ -0,0 +1,82 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - 'v[0-9]+*'
+    # TEMPORARY FOR DEBUGGING, REMOVE BEFORE MERGING THIS PR
+    branches:
+      - '*'
+
+env:
+  CARGO_INCREMENTAL: 0
+  CARGO_NET_RETRY: 10
+  RUSTUP_MAX_RETRIES: 10
+  MACOSX_DEPLOYMENT_TARGET: 10.7
+  # Emit backtraces on panics.
+  RUST_BACKTRACE: 1
+
+jobs:
+  github_build:
+    name: Build release binaries
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          # List of platforms, this must be in sync with the list of platforms in ci.yaml
+          - target: x86_64-unknown-linux-gnu
+            os: ubuntu-latest
+            name: zinnia-x86_64-unknown-linux-gnu.tar.gz
+
+          - target: x86_64-apple-darwin
+            os: macOS-11
+            name: zinnia-x86_64-apple-darwin.tar.gz
+
+          - target: x86_64-pc-windows-msvc
+            os: windows-latest
+            name: zinnia-x86_64-pc-windows-msvc.zip
+            rustflags: -C target-feature=+crt-static
+
+    runs-on: ${{ matrix.os }}
+    continue-on-error: true
+    env:
+      RUSTFLAGS: ${{ matrix.rustflags || '' }}
+    steps:
+      - name: Setup | Checkout
+        uses: actions/checkout@v3
+
+      - name: Setup | Rust
+        uses: actions-rs/toolchain@v1.0.7
+        with:
+          toolchain: stable
+          override: true
+          profile: minimal
+          target: ${{ matrix.target }}
+
+      - name: Build | Build
+        uses: actions-rs/cargo@v1.0.3
+        with:
+          command: build
+          args: --release --locked --target ${{ matrix.target }}
+          use-cross: ${{ matrix.os == 'ubuntu-latest' }}
+
+      - name: Post Build | Prepare artifacts [Windows]
+        if: matrix.os == 'windows-latest'
+        run: |
+          cd target/${{ matrix.target }}/release
+          7z a ../../../${{ matrix.name }} zinnia.exe
+          cd -
+
+      - name: Post Build | Prepare artifacts [-nix]
+        if: matrix.os != 'windows-latest'
+        run: |
+          cd target/${{ matrix.target }}/release
+          tar czvf ../../../${{ matrix.name }} zinnia
+          cd -
+
+      - name: Release | Upload artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: ${{ matrix.name }}
+          path: ${{ matrix.name }}
+