Add GitHub action

Author: kkweon

.github/workflows/go.yaml

@@ -0,0 +1,18 @@
+name: Go
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Go 1.16
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.16
+      - run: go build -v ./...
+      - run: go test -v ./...