Add release workflow

Author: matze

.github/workflows/release.yml

@@ -0,0 +1,31 @@
+on:
+  release:
+    types: [created]
+
+jobs:
+  release:
+    name: release ${{ matrix.target }}
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - target: x86_64-unknown-linux-musl
+            archive: tar.gz tar.xz tar.zst
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          components: clippy, rustfmt
+
+      - name: release artifact
+        uses: rust-build/[email protected]
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          RUSTTARGET: ${{ matrix.target }}
+          ARCHIVE_TYPES: ${{ matrix.archive }}
+          EXTRA_FILES: "README.md LICENSE"