Some fixes for TFTD video player:

1) Vertically centered the video
2) Removed the 100ms delay for the first video frame
3) Count in fli_ss2 is a signed short
4) Corrected the opcode decoding and implemented lastbyte opcode
5) Renamed Flc.cpp and Flc.h in FlcPlayer.cpp and FlcPlayer.cpp in CmakeLists.