Add stubs for server implementation

Signed-off-by: Mrunal Patel <mrunalp@gmail.com>

cmd/server/main.go

@@ -0,0 +1,24 @@
+package main
+
+import (
+	"log"
+	"net"
+
+	"github.com/kubernetes/kubernetes/pkg/kubelet/api/v1alpha1/runtime"
+	"github.com/mrunalp/ocid/server"
+	"google.golang.org/grpc"
+)
+
+const (
+	port = ":49999"
+)
+
+func main() {
+	lis, err := net.Listen("tcp", port)
+	if err != nil {
+		log.Fatalf("failed to listen: %v", err)
+	}
+	s := grpc.NewServer()
+	runtime.RegisterRuntimeServiceServer(s, &server.Server{})
+	s.Serve(lis)
+}