Update protobuf definitions

Update the protobuf definitons to the latest version and implement the
new request and response message.

Earthfile

@@ -59,7 +59,7 @@ compile-proto:
     && apt-get install --yes --no-install-recommends protobuf-compiler=3.* \
     && rm -rf /var/lib/apt/lists/* \
     && go install google.golang.org/protobuf/cmd/[email protected]
-  GIT CLONE --branch 86 https://github.com/spotware/openapi-proto-messages.git openapi-proto-messages
+  GIT CLONE --branch 88 https://github.com/spotware/openapi-proto-messages.git openapi-proto-messages
   RUN cd openapi-proto-messages \
     && protoc --go_out=. --go_opt=paths=source_relative *.proto \
     && find . ! \( -name '*.go' \) -delete

ctrader.go

@@ -140,6 +140,8 @@ func mappingResponse(payloadType uint32) (proto.Message, error) {
 		response = &openapi.ProtoOAGetDynamicLeverageByIDRes{}
 	case uint32(openapi.ProtoOAPayloadType_PROTO_OA_DEAL_LIST_BY_POSITION_ID_RES):
 		response = &openapi.ProtoOADealListByPositionIdRes{}
+	case uint32(openapi.ProtoOAPayloadType_PROTO_OA_GET_POSITION_UNREALIZED_PNL_RES):
+		response = &openapi.ProtoOAGetPositionUnrealizedPnLRes{}
 	default:
 		return nil, undefinedProtobufResourceError[uint32]{Value: payloadType}
 	}
@@ -226,6 +228,8 @@ func mappingPayloadType(t proto.Message) (openapi.ProtoOAPayloadType, error) {
 		return openapi.ProtoOAPayloadType_PROTO_OA_ORDER_LIST_BY_POSITION_ID_REQ, nil
 	case *openapi.ProtoOADealOffsetListReq:
 		return openapi.ProtoOAPayloadType_PROTO_OA_DEAL_OFFSET_LIST_REQ, nil
+	case *openapi.ProtoOAGetPositionUnrealizedPnLReq:
+		return openapi.ProtoOAPayloadType_PROTO_OA_GET_POSITION_UNREALIZED_PNL_REQ, nil
 	default:
 		return 0, undefinedProtobufResourceError[string]{Value: reflect.TypeOf(t).String()}
 	}