ci: add Lint and Check Formatting check

Author: pan93412

.github/workflows/lint.yml

@@ -0,0 +1,30 @@
+name: Lint and Check Formatting
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  lint:
+    name: Lint and Check Formatting
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v5
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: "go.mod"
+          cache: true
+
+      - name: Install dependencies
+        run: go mod download
+
+      - name: Run golangci-lint
+        run: golangci-lint run ./...
+
+      - name: Run gofumpt
+        run: gofumpt -d .