added back sflphone-cli

src/gui/cli/net.h

src/gui/cli/requests.c

src/gui/cli/requests.h

src/gui/cli/seqs.c

src/gui/cli/seqs.h

src/gui/cli/setup.c

src/gui/cli/setup.h

src/gui/cli/sflphone-events.c

src/gui/cli/sflphone-events.h

src/gui/cli/sflphone.c

src/gui/cli/sflphone.h

src/gui/cli/strutils.c

src/gui/cli/strutils.h

src/gui/cli/user-input.c

src/gui/cli/user-input.h