chore(cd): add continuous deployment workflow

.github/workflows/cd.yml

@@ -0,0 +1,60 @@
+name: Continuous Deployment
+
+on:
+  push:
+    tags:
+      - "v*.*.*"
+
+jobs:
+  publish-github:
+    name: Publish on GitHub
+    runs-on: ubuntu-20.04
+    strategy:
+      matrix:
+        TARGET: [x86_64-unknown-linux-gnu, x86_64-unknown-linux-musl]
+    steps:
+      - name: Checkout the repository
+        uses: actions/checkout@master
+      - name: Set the release version
+        run: echo "RELEASE_VERSION=${GITHUB_REF:11}" >> $GITHUB_ENV
+      - name: Install Rust toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          target: ${{ matrix.TARGET }}
+          override: true
+      - name: Build
+        run: cargo build --release --locked --target ${{ matrix.TARGET }}
+      - name: Prepare release assets
+        run: |
+          mkdir release/
+          cp {LICENSE,README.md,CHANGELOG.md,config.toml} release/
+          cp target/${{ matrix.TARGET }}/release/rustypaste release/
+          mv release/ rustypaste-${{ env.RELEASE_VERSION }}/
+      - name: Create release artifacts
+        run: |
+          tar -czvf rustypaste-${{ env.RELEASE_VERSION }}-${{ matrix.TARGET }}.tar.gz \
+            rustypaste-${{ env.RELEASE_VERSION }}/
+          sha512sum rustypaste-${{ env.RELEASE_VERSION }}-${{ matrix.TARGET }}.tar.gz \
+            > rustypaste-${{ env.RELEASE_VERSION }}-${{ matrix.TARGET }}.tar.gz.sha512
+      - name: Upload the release
+        uses: softprops/action-gh-release@v1
+        with:
+          files: |
+            rustypaste-${{ env.RELEASE_VERSION }}-${{ matrix.TARGET }}.tar.gz
+            rustypaste-${{ env.RELEASE_VERSION }}-${{ matrix.TARGET }}.tar.gz.sha512
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+  publish-crates-io:
+    name: Publish on crates.io
+    needs: publish-github
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Checkout the repository
+        uses: actions/checkout@master
+      - name: Publish
+        uses: actions-rs/cargo@v1
+        with:
+          command: publish
+          args: --locked --token ${{ secrets.CARGO_TOKEN }}