pySim-smpp2sim.py: Simulate SMSC+CN+RAN+UE for OTA testing

The pySim-smpp2sim.py program exposes two interfaces:
* SMPP server-side port, so external programs can rx/tx SMS
* APDU interface towards the SIM card

It therefore emulates the SMSC, Core Network, RAND and UE parts
that would normally be encountered in an OTA setup.

Change-Id: Ie5bae9d823bca6f6c658bd455303f63bace2258c

setup.py

@@ -33,12 +33,14 @@ setup(
         "packaging",
         "smpp.pdu @ git+https://github.com/hologram-io/smpp.pdu",
         "asn1tools",
+        "smpp.twisted3 @ git+https://github.com/jookies/smpp.twisted",
     ],
     scripts=[
         'pySim-prog.py',
         'pySim-read.py',
         'pySim-shell.py',
         'pySim-trace.py',
+        'pySim-smpp2sim.py',
     ],
     package_data={
         'pySim.esim':