Implement CI for backend-go

.github/workflows/ci_backend_go.yaml

@@ -0,0 +1,40 @@
+name: CI GO Backend
+on:
+  push:
+    branches: [main]
+    paths:
+      - ".github/workflows/ci_backend_go.yaml"
+      - "backend-go/**"
+  pull_request:
+    branches: [main]
+    paths:
+      - ".github/workflows/ci_backend_go.yaml"
+      - "backend-go/**"
+
+jobs:
+  build-and-test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: '1.18'
+
+      - name: Install Tools
+        run: make tools
+
+      - name: Build
+        run: make build
+
+      - name: Format
+        run: make fmt
+
+      - name: Lint
+        run: make lint
+
+      - name: Test
+        run: make test