Publish assets to GH releases from CI on tagged builds

.github/workflows/ci.yml

@@ -71,3 +71,21 @@ jobs:
 
       - name: Run benchmarks
         run: script/benchmark
+
+      - name: Compress CLI binary
+        if: startsWith(github.ref, 'refs/tags/v')
+        run: |
+          cp target/release/tree-sitter .
+          gzip --keep --suffix "-${{ runner.os }}-x64.gz" tree-sitter
+
+      - name: Release
+        uses: softprops/action-gh-release@v1
+        if: startsWith(github.ref, 'refs/tags/v')
+        with:
+          draft: true
+          files: |
+            tree-sitter-*.gz
+            lib/binding_web/tree-sitter.js
+            lib/binding_web/tree-sitter.wasm
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}