Add CI and release workflows using GitHub Actions.

For every push, the CI workflow will build and test the project.

For every v* tag, the release workflow will create a draft release, and build
the binary in release mode.

Jobs are launched in Linux, macOS, and Windows.

Author: ayosec

.github/workflows/ci.yml

@@ -0,0 +1,55 @@
+name: Continuous Integration
+
+on:
+  push:
+    branches:
+      - "*"
+
+jobs:
+  ci:
+    name: rust ${{ matrix.rust }} on ${{ matrix.os }}
+
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        rust:
+          - stable
+          - beta
+          - 1.46.0
+        os:
+          - ubuntu-latest
+          - windows-latest
+          - macos-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Use rust ${{ matrix.rust }}
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: ${{ matrix.rust }}
+          override: true
+          components: rustfmt, clippy
+
+      - name: cargo build
+        uses: actions-rs/cargo@v1
+        with:
+          command: build
+
+      - name: cargo test
+        uses: actions-rs/cargo@v1
+        with:
+          command: test
+
+      - name: Check fmt
+        uses: actions-rs/cargo@v1
+        with:
+          command: fmt
+          args: --all -- --check
+
+      - name: Clippy
+        uses: actions-rs/cargo@v1
+        with:
+          command: clippy
+          args: -- -D warnings

.github/workflows/release.yml

@@ -0,0 +1,86 @@
+name: Release Assets
+
+on:
+  push:
+    tags:
+      - "v*"
+
+jobs:
+  release_draft:
+    name: Create Release
+    runs-on: ubuntu-latest
+    steps:
+      - id: create_release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: Draft ${{ github.ref }}
+          draft: true
+    outputs:
+      upload_url: ${{ steps.create_release.outputs.upload_url }}
+
+  build:
+    name: Binary for ${{ matrix.os }}
+    needs: release_draft
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ ubuntu-latest, macos-latest, windows-latest ]
+        include:
+          - os: ubuntu-latest
+            package: hdcquery-linux-ARCH.tar.gz
+          - os: macos-latest
+            package: hdcquery-macos-ARCH.tar.gz
+          - os: windows-latest
+            package: hdcquery-windows-ARCH.zip
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Use rust ${{ matrix.rust }}
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+
+      - name: Build binary
+        uses: actions-rs/cargo@v1
+        with:
+          command: build
+          args: --release
+
+      - name: Test binary
+        uses: actions-rs/cargo@v1
+        with:
+          command: run
+          args: --release -- show rustlang/rust
+
+      - name: Package for Windows
+        if: matrix.os == 'windows-latest'
+        run: |
+          choco install zip
+          cd target/release
+          zip ../../${{ matrix.package }} hdcquery.exe
+
+      - name: Package for Linux/UNIX
+        if: matrix.os != 'windows-latest'
+        run: |
+          set -xe
+          strip target/release/hdcquery
+          tar -czf ${{ matrix.package }} -C target/release hdcquery
+
+      - id: asset_name_generator
+        name: Set asset name
+        shell: bash
+        run: |
+          echo "::set-output name=name::${{ matrix.package }}" | sed "s/ARCH/$(uname -m)/g"
+
+      - uses: actions/upload-release-asset@v1
+        with:
+          upload_url: ${{ needs.release_draft.outputs.upload_url }}
+          asset_path: ${{ matrix.package }}
+          asset_name: ${{ steps.asset_name_generator.outputs.name }}
+          asset_content_type: application/octet-stream
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}