Added GitHub Actions CI workflow and initial unit tests

- Added .github/workflows/go-test.yml for automated CI testing using GitHub Actions
- Implemented unit tests for:
  • utils/release.go (FetchLatestRelease)
  • routes/builds.go (buildsHandler)
  • routes/status.go (statusHandler)
- Ensured tests run with go test ./... -v -cover
- Included go vet and gofmt checks in the CI pipeline
- Improved project reliability and continuous integration setup

NewProxy/tests/status_test.go

@@ -0,0 +1,24 @@
+package tests
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"newproxy/routes"
+	"testing"
+
+	"github.com/gin-gonic/gin"
+)
+
+func TestStatusHandler(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+	r := gin.Default()
+	routes.RegisterStatusRoute(r)
+
+	req, _ := http.NewRequest("GET", "/status", nil)
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Errorf("Expected status 200 OK, got %d", w.Code)
+	}
+}