Moving BBSim entrypoint in the cmd folder, building bbsimctl in the container

Change-Id: I4823578ed17c40b13c1c9a561e7aa7e6640f7f19
diff --git a/cmd/bbsimctl/bbsimctl.go b/cmd/bbsimctl/bbsimctl.go
new file mode 100644
index 0000000..29b45c5
--- /dev/null
+++ b/cmd/bbsimctl/bbsimctl.go
@@ -0,0 +1,63 @@
+/*
+ * Portions copyright 2019-present Open Networking Foundation
+ * Original copyright 2019-present Ciena Corporation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package main
+
+import (
+	"fmt"
+	"github.com/jessevdk/go-flags"
+	"github.com/opencord/bbsim/internal/bbsimctl/commands"
+	"github.com/opencord/bbsim/internal/bbsimctl/config"
+	"os"
+	"path"
+)
+
+func main() {
+
+	parser := flags.NewNamedParser(path.Base(os.Args[0]),
+		flags.HelpFlag|flags.PassDoubleDash|flags.PassAfterNonOption)
+	_, err := parser.AddGroup("Global Options", "", &config.GlobalOptions)
+	if err != nil {
+		panic(err)
+	}
+
+	commands.RegisterConfigCommands(parser)
+	commands.RegisterOltCommands(parser)
+	commands.RegisterONUCommands(parser)
+
+	_, err = parser.ParseArgs(os.Args[1:])
+	if err != nil {
+		_, ok := err.(*flags.Error)
+		if ok {
+			real := err.(*flags.Error)
+			if real.Type == flags.ErrHelp {
+				os.Stdout.WriteString(err.Error() + "\n")
+				return
+			}
+		}
+
+		//corderror, ok := err.(corderrors.CordCtlError)
+		//if ok {
+		//	if corderror.ShouldDumpStack() || config.GlobalOptions.Debug {
+		//		os.Stderr.WriteString("\n" + corderror.Stack())
+		//	}
+		//}
+
+		fmt.Fprintf(os.Stderr, "%s: %s\n", os.Args[0], err.Error())
+
+		os.Exit(1)
+	}
+}