Add Github Action to go fmt, vet and build

.github/workflows/build.yml

@@ -0,0 +1,27 @@
+name: Build
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Set up Go 1.18
+        uses: actions/setup-go@v3
+        with:
+          go-version: 1.18
+
+      - name: Format
+        run: go fmt && git diff --exit-code
+
+      - name: Vet
+        run: go vet
+
+      - name: Build
+        run: go build