work on generating main.go and use config not hardcoded vals

example_project/cmd/app/main.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+    "os"
+	"fmt"
+	"net"
+	"log"
+	
+    "google.golang.org/grpc"
+	pb "github.com/cubixle/tuugen/example_project/internal/pb/service"
+	"github.com/cubixle/tuugen/example_project/internal/service"
+)
+
+func main() {
+    lis, err := net.Listen("tcp", fmt.Sprintf(":%s", getEnv("GRPC_PORT", "8090")))
+	if err != nil {
+		log.Fatalf("failed to listen: %v", err)
+	}
+
+	s := grpc.NewServer()
+	pb.RegisterServiceServer(s, service.New(store))
+	if err := s.Serve(lis); err != nil {
+		log.Fatalf("failed to serve: %v", err)
+	}
+}
+
+func getEnv(name, defaultValue string) string {
+    v := os.Getenv(name)
+    if v == "" {
+        return defaultValue
+    }
+    return v
+}

example_project/tuugen.yml

@@ -1,6 +1,7 @@
 project: tuugen_test_project
 import_path: github.com/cubixle/tuugen/example_project
-proto: service.proto
+proto_file: service.proto
+grpc_file: internal/pb/service/service_grpc.pb.go
 service_name: Service
 data_models:
   - name: User