add github action for goreleaser

.github/workflows/release.yml

@@ -0,0 +1,22 @@
+name: goreleaser
+
+on:
+  push:
+    tags: ["*"]
+
+jobs:
+  goreleaser:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Unshallow
+        run: git fetch --prune --unshallow
+      - uses: actions/setup-go@v1
+        with:
+          go-version: 1.16.x
+      - uses: goreleaser/goreleaser-action@v2
+        with:
+          version: latest
+          args: release --rm-dist
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}