- Renamed build script for brief target descriptor generation

- Created new TargetService class
- Moved brief target descriptor mapping to new TargetService class
- Replaced CMake custom commands with custom targets, for TDF validation and brief target descriptor generation build scripts
- Moved BriefTargetDescriptor into separate header file

src/CMakeLists.txt

@@ -5,6 +5,7 @@ target_sources(
         ${CMAKE_CURRENT_SOURCE_DIR}/Application.cpp
 
         # Services
+        ${CMAKE_CURRENT_SOURCE_DIR}/Services/TargetService.cpp
         ${CMAKE_CURRENT_SOURCE_DIR}/Services/TargetControllerService.cpp
         ${CMAKE_CURRENT_SOURCE_DIR}/Services/PathService.cpp
         ${CMAKE_CURRENT_SOURCE_DIR}/Services/ProcessService.cpp