Add CI workflow

.github/workflows/ci.yml

@@ -0,0 +1,41 @@
+name: CI
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+permissions:
+  contents: read
+  checks: write
+
+jobs:
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v5
+        with:
+          go-version: '1.23'
+          cache: true
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v6
+        with:
+          version: v1.61
+
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v5
+        with:
+          go-version: '1.23'
+          cache: true
+      - name: Install dependencies
+        run: go mod download
+      - name: Build application
+        run: go build -v .
+      - name: Run tests
+        run: go test -v ./...