Add basic application framework and example application to show interaction between events an NBI

Depends on:

• !340 (merged)
• !344 (merged)
• !349 (merged)
• !342 (merged)

api/go/gosdn/rbac/role.pb.go

@@ -213,6 +213,7 @@ type GetRoleRequest struct {
 
 	Timestamp int64  `protobuf:"varint,1,opt,name=timestamp,proto3" json:"timestamp,omitempty"`
 	RoleName  string `protobuf:"bytes,2,opt,name=role_name,json=roleName,proto3" json:"role_name,omitempty"`
+	Id        string `protobuf:"bytes,3,opt,name=id,proto3" json:"id,omitempty"`
 }
 
 func (x *GetRoleRequest) Reset() {
@@ -261,6 +262,13 @@ func (x *GetRoleRequest) GetRoleName() string {
 	return ""
 }
 
+func (x *GetRoleRequest) GetId() string {
+	if x != nil {
+		return x.Id
+	}
+	return ""
+}
+
 type GetRoleResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -808,12 +816,13 @@ var file_gosdn_rbac_role_proto_rawDesc = []byte{
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