Add Go release workflow

Author: skius

.github/workflows/release.yaml

@@ -0,0 +1,16 @@
+on:
+  release:
+    types: [created]
+
+jobs:
+  release-linux-amd64:
+    name: release linux/amd64
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: wangyoucao577/go-release-action@v1.20
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          goos: linux
+          goarch: amd64
+          extra_files: AGPL README.md