Move some files to C++

Pcie40Applications/main_pcie40_b2linkreset.cpp

Pcie40Applications/main_pcie40_b2slc.cpp

Pcie40Applications/main_pcie40_daq.cpp

Pcie40Applications/main_pcie40_dma.cpp

Pcie40Applications/main_pcie40_ecs.cpp

Pcie40Applications/main_pcie40_readFPGAversion.cpp

Pcie40Applications/main_pcie40_ul.cpp