This adds a "libifd_remsim_client.so" PC/SC driver that can be
used to make normal PC/SC client programs (like pySim, sysmo-usim-tool,
osmo-sim-test, osmo-usim-auth, ...) talk to a remote SIM bank.
Change-Id: Ib8707c6e0e46407ab39a693adfec2fa71892f6ee