message: backend: ignore warnings for generated headers
diff: @@ -16,7 +16,7 @@ foreach(COMPONENT_NAME ${COMPONENTS_LIST})
  target_include_directories(${COMPONENT_NAME}_proto_gens
  PRIVATE
  - ${PROJECT_SOURCE_DIR}/backend/src/generated
  + SYSTEM ${PROJECT_SOURCE_DIR}/backend/src/generated
  )
  list(APPEND COMPONENTS_PROTOGENS ${COMPONENT_NAME}_proto_gens)
  @@ -82,7 +82,7 @@ target_include_directories(mavsdk_server
  $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/plugins>
  $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/backend/src/plugins>
  PUBLIC
  - $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/backend/src/generated>
  + SYSTEM $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/backend/src/generated>
  $<INSTALL_INTERFACE:include>
  )
  