Transition to Modern CMake (Remaining CMakeList.txt files)

Gtest and GtestMain Target created which depend on GTEST target

Remaining files which haven't been changed in modern cmake.
 MQ/monitor : Transition in Modern CMake
 core/data/test: Transition to Modern CMake
 reco/qa: Transition to Modern CMake
 tutorial/TaskToAlgo: Transition to modern CMake

external/flib_dpb/CMakeLists.txt

@@ -8,7 +8,7 @@ download_project_if_needed(PROJECT         flib_dpb
 set(LIB_SOURCES flib_dpb/MicrosliceContents.cpp)
 set(LIB_HEADERS flib_dpb/MicrosliceContents.hpp)
 
-add_library(flib_dpb SHARED ${LIB_SOURCES} ${LIB_HEADERS})
+add_Library(flib_dpb SHARED ${LIB_SOURCES} ${LIB_HEADERS})
 target_include_directories(flib_dpb PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/flib_dpb)
 
 install(TARGETS flib_dpb DESTINATION lib)