add workflow for tests

.github/workflows/tests-go.yaml

@@ -0,0 +1,45 @@
+name: Go Tests
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    services:
+      postgres-test:
+        image: postgres:17.2
+        ports:
+          - "5432:5432"
+        env:
+          POSTGRES_DB: maek_test
+          POSTGRES_USER: maek
+          POSTGRES_PASSWORD: passwd
+        options: >-
+          --health-cmd "pg_isready -U maek -d maek_test"
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: '1.23.1'
+      - run: go version
+
+      - name: Install Go modules
+        run: go mod download
+
+      - name: Run Go tests with coverage
+        run: |
+          export SQL_CONN_TEST="postgres://maek:passwd@localhost:5432/maek_test?sslmode=disable"
+          export CGO_ENABLED=0
+          
+          go test -v -coverprofile=coverage.out -covermode=atomic $(go list ./... | grep -v /vendor/)